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Commit | Line | Data |
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0ad19a3f | 1 | /* |
2 | * lxc: linux Container library | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2007, 2008 | |
5 | * | |
6 | * Authors: | |
7 | * Daniel Lezcano <dlezcano at fr.ibm.com> | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | #define _GNU_SOURCE | |
24 | #include <stdio.h> | |
25 | #undef _GNU_SOURCE | |
26 | #include <stdlib.h> | |
e3b4c4c4 | 27 | #include <stdarg.h> |
0ad19a3f | 28 | #include <errno.h> |
29 | #include <string.h> | |
30 | #include <dirent.h> | |
31 | #include <mntent.h> | |
32 | #include <unistd.h> | |
e3b4c4c4 | 33 | #include <sys/wait.h> |
b0a33c1e | 34 | #include <pty.h> |
0ad19a3f | 35 | |
b3ecde1e DL |
36 | #include <linux/loop.h> |
37 | ||
0ad19a3f | 38 | #include <sys/types.h> |
39 | #include <sys/utsname.h> | |
40 | #include <sys/param.h> | |
41 | #include <sys/stat.h> | |
42 | #include <sys/socket.h> | |
43 | #include <sys/mount.h> | |
44 | #include <sys/mman.h> | |
81810dd1 DL |
45 | #include <sys/prctl.h> |
46 | #include <sys/capability.h> | |
cccc74b5 | 47 | #include <sys/personality.h> |
0ad19a3f | 48 | |
49 | #include <arpa/inet.h> | |
50 | #include <fcntl.h> | |
51 | #include <netinet/in.h> | |
52 | #include <net/if.h> | |
6f4a3756 | 53 | #include <libgen.h> |
0ad19a3f | 54 | |
e5bda9ee | 55 | #include "network.h" |
56 | #include "error.h" | |
b2718c72 | 57 | #include "parse.h" |
881450bb | 58 | #include "config.h" |
1b09f2c0 DL |
59 | #include "utils.h" |
60 | #include "conf.h" | |
61 | #include "log.h" | |
62 | #include "lxc.h" /* for lxc_cgroup_set() */ | |
d55bc1ad | 63 | #include "caps.h" /* for lxc_caps_last_cap() */ |
36eb9bde CLG |
64 | |
65 | lxc_log_define(lxc_conf, lxc); | |
e5bda9ee | 66 | |
0ad19a3f | 67 | #define MAXHWLEN 18 |
68 | #define MAXINDEXLEN 20 | |
442cbbe6 | 69 | #define MAXMTULEN 16 |
0ad19a3f | 70 | #define MAXLINELEN 128 |
71 | ||
968fbd36 SK |
72 | #ifndef MS_DIRSYNC |
73 | #define MS_DIRSYNC 128 | |
74 | #endif | |
75 | ||
fdc03323 DL |
76 | #ifndef MS_REC |
77 | #define MS_REC 16384 | |
78 | #endif | |
79 | ||
c08556c6 DL |
80 | #ifndef MNT_DETACH |
81 | #define MNT_DETACH 2 | |
82 | #endif | |
83 | ||
88d413d5 SW |
84 | #ifndef MS_RELATIME |
85 | #define MS_RELATIME (1 << 21) | |
86 | #endif | |
87 | ||
88 | #ifndef MS_STRICTATIME | |
89 | #define MS_STRICTATIME (1 << 24) | |
90 | #endif | |
91 | ||
b09094da MN |
92 | #ifndef CAP_SETFCAP |
93 | #define CAP_SETFCAP 31 | |
94 | #endif | |
95 | ||
96 | #ifndef CAP_MAC_OVERRIDE | |
97 | #define CAP_MAC_OVERRIDE 32 | |
98 | #endif | |
99 | ||
100 | #ifndef CAP_MAC_ADMIN | |
101 | #define CAP_MAC_ADMIN 33 | |
102 | #endif | |
103 | ||
104 | #ifndef PR_CAPBSET_DROP | |
105 | #define PR_CAPBSET_DROP 24 | |
106 | #endif | |
107 | ||
bf601689 MH |
108 | extern int pivot_root(const char * new_root, const char * put_old); |
109 | ||
e3b4c4c4 | 110 | typedef int (*instanciate_cb)(struct lxc_handler *, struct lxc_netdev *); |
0ad19a3f | 111 | |
998ac676 RT |
112 | struct mount_opt { |
113 | char *name; | |
114 | int clear; | |
115 | int flag; | |
116 | }; | |
117 | ||
81810dd1 DL |
118 | struct caps_opt { |
119 | char *name; | |
120 | int value; | |
121 | }; | |
122 | ||
e3b4c4c4 ST |
123 | static int instanciate_veth(struct lxc_handler *, struct lxc_netdev *); |
124 | static int instanciate_macvlan(struct lxc_handler *, struct lxc_netdev *); | |
125 | static int instanciate_vlan(struct lxc_handler *, struct lxc_netdev *); | |
126 | static int instanciate_phys(struct lxc_handler *, struct lxc_netdev *); | |
127 | static int instanciate_empty(struct lxc_handler *, struct lxc_netdev *); | |
82d5ae15 | 128 | |
24654103 DL |
129 | static instanciate_cb netdev_conf[LXC_NET_MAXCONFTYPE + 1] = { |
130 | [LXC_NET_VETH] = instanciate_veth, | |
131 | [LXC_NET_MACVLAN] = instanciate_macvlan, | |
132 | [LXC_NET_VLAN] = instanciate_vlan, | |
133 | [LXC_NET_PHYS] = instanciate_phys, | |
134 | [LXC_NET_EMPTY] = instanciate_empty, | |
0ad19a3f | 135 | }; |
136 | ||
998ac676 | 137 | static struct mount_opt mount_opt[] = { |
88d413d5 SW |
138 | { "defaults", 0, 0 }, |
139 | { "ro", 0, MS_RDONLY }, | |
140 | { "rw", 1, MS_RDONLY }, | |
141 | { "suid", 1, MS_NOSUID }, | |
142 | { "nosuid", 0, MS_NOSUID }, | |
143 | { "dev", 1, MS_NODEV }, | |
144 | { "nodev", 0, MS_NODEV }, | |
145 | { "exec", 1, MS_NOEXEC }, | |
146 | { "noexec", 0, MS_NOEXEC }, | |
147 | { "sync", 0, MS_SYNCHRONOUS }, | |
148 | { "async", 1, MS_SYNCHRONOUS }, | |
149 | { "dirsync", 0, MS_DIRSYNC }, | |
150 | { "remount", 0, MS_REMOUNT }, | |
151 | { "mand", 0, MS_MANDLOCK }, | |
152 | { "nomand", 1, MS_MANDLOCK }, | |
153 | { "atime", 1, MS_NOATIME }, | |
154 | { "noatime", 0, MS_NOATIME }, | |
155 | { "diratime", 1, MS_NODIRATIME }, | |
156 | { "nodiratime", 0, MS_NODIRATIME }, | |
157 | { "bind", 0, MS_BIND }, | |
158 | { "rbind", 0, MS_BIND|MS_REC }, | |
159 | { "relatime", 0, MS_RELATIME }, | |
160 | { "norelatime", 1, MS_RELATIME }, | |
161 | { "strictatime", 0, MS_STRICTATIME }, | |
162 | { "nostrictatime", 1, MS_STRICTATIME }, | |
163 | { NULL, 0, 0 }, | |
998ac676 RT |
164 | }; |
165 | ||
81810dd1 | 166 | static struct caps_opt caps_opt[] = { |
a6afdde9 | 167 | { "chown", CAP_CHOWN }, |
1e11be34 DL |
168 | { "dac_override", CAP_DAC_OVERRIDE }, |
169 | { "dac_read_search", CAP_DAC_READ_SEARCH }, | |
170 | { "fowner", CAP_FOWNER }, | |
171 | { "fsetid", CAP_FSETID }, | |
81810dd1 DL |
172 | { "kill", CAP_KILL }, |
173 | { "setgid", CAP_SETGID }, | |
174 | { "setuid", CAP_SETUID }, | |
175 | { "setpcap", CAP_SETPCAP }, | |
176 | { "linux_immutable", CAP_LINUX_IMMUTABLE }, | |
177 | { "net_bind_service", CAP_NET_BIND_SERVICE }, | |
178 | { "net_broadcast", CAP_NET_BROADCAST }, | |
179 | { "net_admin", CAP_NET_ADMIN }, | |
180 | { "net_raw", CAP_NET_RAW }, | |
181 | { "ipc_lock", CAP_IPC_LOCK }, | |
182 | { "ipc_owner", CAP_IPC_OWNER }, | |
183 | { "sys_module", CAP_SYS_MODULE }, | |
184 | { "sys_rawio", CAP_SYS_RAWIO }, | |
185 | { "sys_chroot", CAP_SYS_CHROOT }, | |
186 | { "sys_ptrace", CAP_SYS_PTRACE }, | |
187 | { "sys_pacct", CAP_SYS_PACCT }, | |
188 | { "sys_admin", CAP_SYS_ADMIN }, | |
189 | { "sys_boot", CAP_SYS_BOOT }, | |
190 | { "sys_nice", CAP_SYS_NICE }, | |
191 | { "sys_resource", CAP_SYS_RESOURCE }, | |
192 | { "sys_time", CAP_SYS_TIME }, | |
193 | { "sys_tty_config", CAP_SYS_TTY_CONFIG }, | |
194 | { "mknod", CAP_MKNOD }, | |
195 | { "lease", CAP_LEASE }, | |
9527e566 | 196 | #ifdef CAP_AUDIT_WRITE |
81810dd1 | 197 | { "audit_write", CAP_AUDIT_WRITE }, |
9527e566 FW |
198 | #endif |
199 | #ifdef CAP_AUDIT_CONTROL | |
81810dd1 | 200 | { "audit_control", CAP_AUDIT_CONTROL }, |
9527e566 | 201 | #endif |
81810dd1 DL |
202 | { "setfcap", CAP_SETFCAP }, |
203 | { "mac_override", CAP_MAC_OVERRIDE }, | |
204 | { "mac_admin", CAP_MAC_ADMIN }, | |
5170c716 CS |
205 | #ifdef CAP_SYSLOG |
206 | { "syslog", CAP_SYSLOG }, | |
207 | #endif | |
208 | #ifdef CAP_WAKE_ALARM | |
209 | { "wake_alarm", CAP_WAKE_ALARM }, | |
210 | #endif | |
81810dd1 DL |
211 | }; |
212 | ||
751d9dcd DL |
213 | static int run_script(const char *name, const char *section, |
214 | const char *script, ...) | |
e3b4c4c4 | 215 | { |
abbfd20b DL |
216 | int ret; |
217 | FILE *f; | |
218 | char *buffer, *p, *output; | |
219 | size_t size = 0; | |
220 | va_list ap; | |
751d9dcd DL |
221 | |
222 | INFO("Executing script '%s' for container '%s', config section '%s'", | |
223 | script, name, section); | |
e3b4c4c4 | 224 | |
abbfd20b DL |
225 | va_start(ap, script); |
226 | while ((p = va_arg(ap, char *))) | |
95642a10 | 227 | size += strlen(p) + 1; |
abbfd20b DL |
228 | va_end(ap); |
229 | ||
230 | size += strlen(script); | |
231 | size += strlen(name); | |
232 | size += strlen(section); | |
95642a10 | 233 | size += 3; |
abbfd20b | 234 | |
95642a10 MS |
235 | if (size > INT_MAX) |
236 | return -1; | |
237 | ||
238 | buffer = alloca(size); | |
abbfd20b DL |
239 | if (!buffer) { |
240 | ERROR("failed to allocate memory"); | |
751d9dcd DL |
241 | return -1; |
242 | } | |
243 | ||
9ba8130c SH |
244 | ret = snprintf(buffer, size, "%s %s %s", script, name, section); |
245 | if (ret < 0 || ret >= size) { | |
246 | ERROR("Script name too long"); | |
247 | free(buffer); | |
248 | return -1; | |
249 | } | |
751d9dcd | 250 | |
abbfd20b | 251 | va_start(ap, script); |
9ba8130c SH |
252 | while ((p = va_arg(ap, char *))) { |
253 | int len = size-ret; | |
254 | int rc; | |
255 | rc = snprintf(buffer + ret, len, " %s", p); | |
256 | if (rc < 0 || rc >= len) { | |
257 | free(buffer); | |
258 | ERROR("Script args too long"); | |
259 | return -1; | |
260 | } | |
261 | ret += rc; | |
262 | } | |
abbfd20b | 263 | va_end(ap); |
751d9dcd | 264 | |
abbfd20b DL |
265 | f = popen(buffer, "r"); |
266 | if (!f) { | |
267 | SYSERROR("popen failed"); | |
268 | return -1; | |
269 | } | |
e3b4c4c4 | 270 | |
abbfd20b DL |
271 | output = malloc(LXC_LOG_BUFFER_SIZE); |
272 | if (!output) { | |
273 | ERROR("failed to allocate memory for script output"); | |
274 | return -1; | |
e3b4c4c4 | 275 | } |
751d9dcd | 276 | |
abbfd20b DL |
277 | while(fgets(output, LXC_LOG_BUFFER_SIZE, f)) |
278 | DEBUG("script output: %s", output); | |
279 | ||
280 | free(output); | |
281 | ||
282 | if (pclose(f)) { | |
283 | ERROR("Script exited on error"); | |
751d9dcd DL |
284 | return -1; |
285 | } | |
286 | ||
287 | return 0; | |
e3b4c4c4 ST |
288 | } |
289 | ||
a6afdde9 | 290 | static int find_fstype_cb(char* buffer, void *data) |
78ae2fcc | 291 | { |
292 | struct cbarg { | |
293 | const char *rootfs; | |
a6afdde9 | 294 | const char *target; |
78ae2fcc | 295 | int mntopt; |
296 | } *cbarg = data; | |
297 | ||
298 | char *fstype; | |
299 | ||
300 | /* we don't try 'nodev' entries */ | |
301 | if (strstr(buffer, "nodev")) | |
302 | return 0; | |
303 | ||
304 | fstype = buffer; | |
b2718c72 | 305 | fstype += lxc_char_left_gc(fstype, strlen(fstype)); |
306 | fstype[lxc_char_right_gc(fstype, strlen(fstype))] = '\0'; | |
78ae2fcc | 307 | |
a6afdde9 DL |
308 | DEBUG("trying to mount '%s'->'%s' with fstype '%s'", |
309 | cbarg->rootfs, cbarg->target, fstype); | |
310 | ||
311 | if (mount(cbarg->rootfs, cbarg->target, fstype, cbarg->mntopt, NULL)) { | |
312 | DEBUG("mount failed with error: %s", strerror(errno)); | |
78ae2fcc | 313 | return 0; |
a6afdde9 | 314 | } |
78ae2fcc | 315 | |
a6afdde9 DL |
316 | INFO("mounted '%s' on '%s', with fstype '%s'", |
317 | cbarg->rootfs, cbarg->target, fstype); | |
78ae2fcc | 318 | |
319 | return 1; | |
320 | } | |
321 | ||
2656d231 | 322 | static int mount_unknow_fs(const char *rootfs, const char *target, int mntopt) |
78ae2fcc | 323 | { |
a6afdde9 | 324 | int i; |
78ae2fcc | 325 | |
326 | struct cbarg { | |
327 | const char *rootfs; | |
a6afdde9 | 328 | const char *target; |
78ae2fcc | 329 | int mntopt; |
330 | } cbarg = { | |
331 | .rootfs = rootfs, | |
a6afdde9 | 332 | .target = target, |
78ae2fcc | 333 | .mntopt = mntopt, |
334 | }; | |
335 | ||
a6afdde9 DL |
336 | /* |
337 | * find the filesystem type with brute force: | |
338 | * first we check with /etc/filesystems, in case the modules | |
78ae2fcc | 339 | * are auto-loaded and fall back to the supported kernel fs |
340 | */ | |
341 | char *fsfile[] = { | |
342 | "/etc/filesystems", | |
343 | "/proc/filesystems", | |
344 | }; | |
345 | ||
a6afdde9 DL |
346 | for (i = 0; i < sizeof(fsfile)/sizeof(fsfile[0]); i++) { |
347 | ||
348 | int ret; | |
349 | ||
350 | if (access(fsfile[i], F_OK)) | |
351 | continue; | |
352 | ||
353 | ret = lxc_file_for_each_line(fsfile[i], find_fstype_cb, &cbarg); | |
354 | if (ret < 0) { | |
355 | ERROR("failed to parse '%s'", fsfile[i]); | |
356 | return -1; | |
357 | } | |
358 | ||
359 | if (ret) | |
360 | return 0; | |
78ae2fcc | 361 | } |
362 | ||
a6afdde9 DL |
363 | ERROR("failed to determine fs type for '%s'", rootfs); |
364 | return -1; | |
365 | } | |
366 | ||
2656d231 | 367 | static int mount_rootfs_dir(const char *rootfs, const char *target) |
a6afdde9 DL |
368 | { |
369 | return mount(rootfs, target, "none", MS_BIND | MS_REC, NULL); | |
370 | } | |
371 | ||
372 | static int setup_lodev(const char *rootfs, int fd, struct loop_info64 *loinfo) | |
373 | { | |
374 | int rfd; | |
375 | int ret = -1; | |
376 | ||
377 | rfd = open(rootfs, O_RDWR); | |
378 | if (rfd < 0) { | |
379 | SYSERROR("failed to open '%s'", rootfs); | |
78ae2fcc | 380 | return -1; |
381 | } | |
382 | ||
a6afdde9 | 383 | memset(loinfo, 0, sizeof(*loinfo)); |
78ae2fcc | 384 | |
a6afdde9 | 385 | loinfo->lo_flags = LO_FLAGS_AUTOCLEAR; |
78ae2fcc | 386 | |
a6afdde9 DL |
387 | if (ioctl(fd, LOOP_SET_FD, rfd)) { |
388 | SYSERROR("failed to LOOP_SET_FD"); | |
389 | goto out; | |
78ae2fcc | 390 | } |
391 | ||
a6afdde9 DL |
392 | if (ioctl(fd, LOOP_SET_STATUS64, loinfo)) { |
393 | SYSERROR("failed to LOOP_SET_STATUS64"); | |
78ae2fcc | 394 | goto out; |
395 | } | |
396 | ||
a6afdde9 | 397 | ret = 0; |
78ae2fcc | 398 | out: |
a6afdde9 | 399 | close(rfd); |
78ae2fcc | 400 | |
a6afdde9 | 401 | return ret; |
78ae2fcc | 402 | } |
403 | ||
2656d231 | 404 | static int mount_rootfs_file(const char *rootfs, const char *target) |
78ae2fcc | 405 | { |
a6afdde9 DL |
406 | struct dirent dirent, *direntp; |
407 | struct loop_info64 loinfo; | |
9ba8130c | 408 | int ret = -1, fd = -1, rc; |
a6afdde9 DL |
409 | DIR *dir; |
410 | char path[MAXPATHLEN]; | |
78ae2fcc | 411 | |
a6afdde9 DL |
412 | dir = opendir("/dev"); |
413 | if (!dir) { | |
414 | SYSERROR("failed to open '/dev'"); | |
78ae2fcc | 415 | return -1; |
416 | } | |
417 | ||
a6afdde9 DL |
418 | while (!readdir_r(dir, &dirent, &direntp)) { |
419 | ||
420 | if (!direntp) | |
421 | break; | |
422 | ||
423 | if (!strcmp(direntp->d_name, ".")) | |
424 | continue; | |
425 | ||
426 | if (!strcmp(direntp->d_name, "..")) | |
427 | continue; | |
428 | ||
429 | if (strncmp(direntp->d_name, "loop", 4)) | |
430 | continue; | |
431 | ||
9ba8130c SH |
432 | rc = snprintf(path, MAXPATHLEN, "/dev/%s", direntp->d_name); |
433 | if (rc < 0 || rc >= MAXPATHLEN) | |
434 | continue; | |
435 | ||
a6afdde9 DL |
436 | fd = open(path, O_RDWR); |
437 | if (fd < 0) | |
438 | continue; | |
439 | ||
440 | if (ioctl(fd, LOOP_GET_STATUS64, &loinfo) == 0) { | |
441 | close(fd); | |
442 | continue; | |
443 | } | |
444 | ||
445 | if (errno != ENXIO) { | |
446 | WARN("unexpected error for ioctl on '%s': %m", | |
447 | direntp->d_name); | |
448 | continue; | |
449 | } | |
450 | ||
451 | DEBUG("found '%s' free lodev", path); | |
452 | ||
453 | ret = setup_lodev(rootfs, fd, &loinfo); | |
454 | if (!ret) | |
2656d231 | 455 | ret = mount_unknow_fs(path, target, 0); |
a6afdde9 DL |
456 | close(fd); |
457 | ||
458 | break; | |
459 | } | |
460 | ||
461 | if (closedir(dir)) | |
462 | WARN("failed to close directory"); | |
463 | ||
464 | return ret; | |
78ae2fcc | 465 | } |
466 | ||
2656d231 | 467 | static int mount_rootfs_block(const char *rootfs, const char *target) |
a6afdde9 | 468 | { |
2656d231 | 469 | return mount_unknow_fs(rootfs, target, 0); |
a6afdde9 DL |
470 | } |
471 | ||
0c547523 SH |
472 | /* |
473 | * pin_rootfs | |
474 | * if rootfs is a directory, then open ${rootfs}.hold for writing for the | |
475 | * duration of the container run, to prevent the container from marking the | |
476 | * underlying fs readonly on shutdown. | |
477 | * return -1 on error. | |
478 | * return -2 if nothing needed to be pinned. | |
479 | * return an open fd (>=0) if we pinned it. | |
480 | */ | |
481 | int pin_rootfs(const char *rootfs) | |
482 | { | |
483 | char absrootfs[MAXPATHLEN]; | |
484 | char absrootfspin[MAXPATHLEN]; | |
485 | struct stat s; | |
486 | int ret, fd; | |
487 | ||
e99ee0de SH |
488 | if (rootfs == NULL || strlen(rootfs) == 0) |
489 | return 0; | |
490 | ||
0c547523 SH |
491 | if (!realpath(rootfs, absrootfs)) { |
492 | SYSERROR("failed to get real path for '%s'", rootfs); | |
493 | return -1; | |
494 | } | |
495 | ||
496 | if (access(absrootfs, F_OK)) { | |
497 | SYSERROR("'%s' is not accessible", absrootfs); | |
498 | return -1; | |
499 | } | |
500 | ||
501 | if (stat(absrootfs, &s)) { | |
502 | SYSERROR("failed to stat '%s'", absrootfs); | |
503 | return -1; | |
504 | } | |
505 | ||
506 | if (!__S_ISTYPE(s.st_mode, S_IFDIR)) | |
507 | return -2; | |
508 | ||
509 | ret = snprintf(absrootfspin, MAXPATHLEN, "%s%s", absrootfs, ".hold"); | |
510 | if (ret >= MAXPATHLEN) { | |
511 | SYSERROR("pathname too long for rootfs hold file"); | |
512 | return -1; | |
513 | } | |
514 | ||
515 | fd = open(absrootfspin, O_CREAT | O_RDWR, S_IWUSR|S_IRUSR); | |
516 | INFO("opened %s as fd %d\n", absrootfspin, fd); | |
517 | return fd; | |
518 | } | |
519 | ||
2656d231 | 520 | static int mount_rootfs(const char *rootfs, const char *target) |
0ad19a3f | 521 | { |
b09ef133 | 522 | char absrootfs[MAXPATHLEN]; |
78ae2fcc | 523 | struct stat s; |
a6afdde9 | 524 | int i; |
78ae2fcc | 525 | |
a6afdde9 | 526 | typedef int (*rootfs_cb)(const char *, const char *); |
78ae2fcc | 527 | |
528 | struct rootfs_type { | |
529 | int type; | |
530 | rootfs_cb cb; | |
531 | } rtfs_type[] = { | |
2656d231 DL |
532 | { S_IFDIR, mount_rootfs_dir }, |
533 | { S_IFBLK, mount_rootfs_block }, | |
534 | { S_IFREG, mount_rootfs_file }, | |
78ae2fcc | 535 | }; |
0ad19a3f | 536 | |
4c8ab83b | 537 | if (!realpath(rootfs, absrootfs)) { |
36eb9bde | 538 | SYSERROR("failed to get real path for '%s'", rootfs); |
4c8ab83b | 539 | return -1; |
540 | } | |
b09ef133 | 541 | |
b09ef133 | 542 | if (access(absrootfs, F_OK)) { |
36eb9bde | 543 | SYSERROR("'%s' is not accessible", absrootfs); |
b09ef133 | 544 | return -1; |
545 | } | |
546 | ||
78ae2fcc | 547 | if (stat(absrootfs, &s)) { |
36eb9bde | 548 | SYSERROR("failed to stat '%s'", absrootfs); |
9b0f0477 | 549 | return -1; |
550 | } | |
551 | ||
78ae2fcc | 552 | for (i = 0; i < sizeof(rtfs_type)/sizeof(rtfs_type[0]); i++) { |
9b0f0477 | 553 | |
78ae2fcc | 554 | if (!__S_ISTYPE(s.st_mode, rtfs_type[i].type)) |
555 | continue; | |
9b0f0477 | 556 | |
a6afdde9 | 557 | return rtfs_type[i].cb(absrootfs, target); |
78ae2fcc | 558 | } |
9b0f0477 | 559 | |
36eb9bde | 560 | ERROR("unsupported rootfs type for '%s'", absrootfs); |
78ae2fcc | 561 | return -1; |
0ad19a3f | 562 | } |
563 | ||
4e5440c6 | 564 | static int setup_utsname(struct utsname *utsname) |
0ad19a3f | 565 | { |
4e5440c6 DL |
566 | if (!utsname) |
567 | return 0; | |
0ad19a3f | 568 | |
4e5440c6 DL |
569 | if (sethostname(utsname->nodename, strlen(utsname->nodename))) { |
570 | SYSERROR("failed to set the hostname to '%s'", utsname->nodename); | |
0ad19a3f | 571 | return -1; |
572 | } | |
573 | ||
4e5440c6 | 574 | INFO("'%s' hostname has been setup", utsname->nodename); |
cd54d859 | 575 | |
0ad19a3f | 576 | return 0; |
577 | } | |
578 | ||
33fcb7a0 | 579 | static int setup_tty(const struct lxc_rootfs *rootfs, |
7c6ef2a2 | 580 | const struct lxc_tty_info *tty_info, char *ttydir) |
b0a33c1e | 581 | { |
7c6ef2a2 SH |
582 | char path[MAXPATHLEN], lxcpath[MAXPATHLEN]; |
583 | int i, ret; | |
b0a33c1e | 584 | |
bc9bd0e3 DL |
585 | if (!rootfs->path) |
586 | return 0; | |
587 | ||
b0a33c1e | 588 | for (i = 0; i < tty_info->nbtty; i++) { |
589 | ||
590 | struct lxc_pty_info *pty_info = &tty_info->pty_info[i]; | |
591 | ||
7c6ef2a2 | 592 | ret = snprintf(path, sizeof(path), "%s/dev/tty%d", |
12297168 | 593 | rootfs->mount, i + 1); |
7c6ef2a2 SH |
594 | if (ret >= sizeof(path)) { |
595 | ERROR("pathname too long for ttys"); | |
596 | return -1; | |
597 | } | |
598 | if (ttydir) { | |
599 | /* create dev/lxc/tty%d" */ | |
9ba8130c | 600 | ret = snprintf(lxcpath, sizeof(lxcpath), "%s/dev/%s/tty%d", |
7c6ef2a2 SH |
601 | rootfs->mount, ttydir, i + 1); |
602 | if (ret >= sizeof(lxcpath)) { | |
603 | ERROR("pathname too long for ttys"); | |
604 | return -1; | |
605 | } | |
606 | ret = creat(lxcpath, 0660); | |
607 | if (ret==-1 && errno != EEXIST) { | |
608 | SYSERROR("error creating %s\n", lxcpath); | |
609 | return -1; | |
610 | } | |
611 | close(ret); | |
612 | ret = unlink(path); | |
613 | if (ret && errno != ENOENT) { | |
614 | SYSERROR("error unlinking %s\n", path); | |
615 | return -1; | |
616 | } | |
b0a33c1e | 617 | |
7c6ef2a2 SH |
618 | if (mount(pty_info->name, lxcpath, "none", MS_BIND, 0)) { |
619 | WARN("failed to mount '%s'->'%s'", | |
620 | pty_info->name, path); | |
621 | continue; | |
622 | } | |
13954cce | 623 | |
9ba8130c SH |
624 | ret = snprintf(lxcpath, sizeof(lxcpath), "%s/tty%d", ttydir, i+1); |
625 | if (ret >= sizeof(lxcpath)) { | |
626 | ERROR("tty pathname too long"); | |
627 | return -1; | |
628 | } | |
7c6ef2a2 SH |
629 | ret = symlink(lxcpath, path); |
630 | if (ret) { | |
631 | SYSERROR("failed to create symlink for tty %d\n", i+1); | |
632 | return -1; | |
633 | } | |
634 | } else { | |
635 | if (mount(pty_info->name, path, "none", MS_BIND, 0)) { | |
636 | WARN("failed to mount '%s'->'%s'", | |
637 | pty_info->name, path); | |
638 | continue; | |
639 | } | |
b0a33c1e | 640 | } |
641 | } | |
642 | ||
cd54d859 DL |
643 | INFO("%d tty(s) has been setup", tty_info->nbtty); |
644 | ||
b0a33c1e | 645 | return 0; |
646 | } | |
647 | ||
7a7ff0c6 | 648 | static int setup_rootfs_pivot_root_cb(char *buffer, void *data) |
bf601689 MH |
649 | { |
650 | struct lxc_list *mountlist, *listentry, *iterator; | |
651 | char *pivotdir, *mountpoint, *mountentry; | |
652 | int found; | |
653 | void **cbparm; | |
654 | ||
655 | mountentry = buffer; | |
656 | cbparm = (void **)data; | |
657 | ||
658 | mountlist = cbparm[0]; | |
659 | pivotdir = cbparm[1]; | |
660 | ||
661 | /* parse entry, first field is mountname, ignore */ | |
662 | mountpoint = strtok(mountentry, " "); | |
663 | if (!mountpoint) | |
664 | return -1; | |
665 | ||
666 | /* second field is mountpoint */ | |
667 | mountpoint = strtok(NULL, " "); | |
668 | if (!mountpoint) | |
669 | return -1; | |
670 | ||
671 | /* only consider mountpoints below old root fs */ | |
672 | if (strncmp(mountpoint, pivotdir, strlen(pivotdir))) | |
673 | return 0; | |
674 | ||
675 | /* filter duplicate mountpoints */ | |
676 | found = 0; | |
677 | lxc_list_for_each(iterator, mountlist) { | |
678 | if (!strcmp(iterator->elem, mountpoint)) { | |
679 | found = 1; | |
680 | break; | |
681 | } | |
682 | } | |
683 | if (found) | |
684 | return 0; | |
685 | ||
686 | /* add entry to list */ | |
687 | listentry = malloc(sizeof(*listentry)); | |
688 | if (!listentry) { | |
689 | SYSERROR("malloc for mountpoint listentry failed"); | |
690 | return -1; | |
691 | } | |
692 | ||
693 | listentry->elem = strdup(mountpoint); | |
694 | if (!listentry->elem) { | |
695 | SYSERROR("strdup failed"); | |
696 | return -1; | |
697 | } | |
698 | lxc_list_add_tail(mountlist, listentry); | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
cc6f6dd7 | 703 | static int umount_oldrootfs(const char *oldrootfs) |
bf601689 | 704 | { |
2382ecff | 705 | char path[MAXPATHLEN]; |
bf601689 MH |
706 | void *cbparm[2]; |
707 | struct lxc_list mountlist, *iterator; | |
708 | int ok, still_mounted, last_still_mounted; | |
9ba8130c | 709 | int rc; |
bf601689 MH |
710 | |
711 | /* read and parse /proc/mounts in old root fs */ | |
712 | lxc_list_init(&mountlist); | |
713 | ||
cc6f6dd7 | 714 | /* oldrootfs is on the top tree directory now */ |
9ba8130c SH |
715 | rc = snprintf(path, sizeof(path), "/%s", oldrootfs); |
716 | if (rc >= sizeof(path)) { | |
717 | ERROR("rootfs name too long"); | |
718 | return -1; | |
719 | } | |
bf601689 | 720 | cbparm[0] = &mountlist; |
bf601689 | 721 | |
cc6f6dd7 | 722 | cbparm[1] = strdup(path); |
bf601689 MH |
723 | if (!cbparm[1]) { |
724 | SYSERROR("strdup failed"); | |
725 | return -1; | |
726 | } | |
727 | ||
9ba8130c SH |
728 | rc = snprintf(path, sizeof(path), "%s/proc/mounts", oldrootfs); |
729 | if (rc >= sizeof(path)) { | |
730 | ERROR("container proc/mounts name too long"); | |
731 | return -1; | |
732 | } | |
cc6f6dd7 DL |
733 | |
734 | ok = lxc_file_for_each_line(path, | |
735 | setup_rootfs_pivot_root_cb, &cbparm); | |
bf601689 MH |
736 | if (ok < 0) { |
737 | SYSERROR("failed to read or parse mount list '%s'", path); | |
738 | return -1; | |
739 | } | |
740 | ||
741 | /* umount filesystems until none left or list no longer shrinks */ | |
742 | still_mounted = 0; | |
743 | do { | |
744 | last_still_mounted = still_mounted; | |
745 | still_mounted = 0; | |
746 | ||
747 | lxc_list_for_each(iterator, &mountlist) { | |
748 | ||
c08556c6 | 749 | /* umount normally */ |
bf601689 MH |
750 | if (!umount(iterator->elem)) { |
751 | DEBUG("umounted '%s'", (char *)iterator->elem); | |
752 | lxc_list_del(iterator); | |
753 | continue; | |
754 | } | |
755 | ||
bf601689 MH |
756 | still_mounted++; |
757 | } | |
7df119ee | 758 | |
bf601689 MH |
759 | } while (still_mounted > 0 && still_mounted != last_still_mounted); |
760 | ||
7df119ee | 761 | |
c08556c6 DL |
762 | lxc_list_for_each(iterator, &mountlist) { |
763 | ||
764 | /* let's try a lazy umount */ | |
765 | if (!umount2(iterator->elem, MNT_DETACH)) { | |
766 | INFO("lazy unmount of '%s'", (char *)iterator->elem); | |
767 | continue; | |
768 | } | |
769 | ||
770 | /* be more brutal (nfs) */ | |
771 | if (!umount2(iterator->elem, MNT_FORCE)) { | |
772 | INFO("forced unmount of '%s'", (char *)iterator->elem); | |
773 | continue; | |
774 | } | |
775 | ||
7df119ee | 776 | WARN("failed to unmount '%s'", (char *)iterator->elem); |
c08556c6 | 777 | } |
bf601689 | 778 | |
cc6f6dd7 DL |
779 | return 0; |
780 | } | |
781 | ||
782 | static int setup_rootfs_pivot_root(const char *rootfs, const char *pivotdir) | |
783 | { | |
784 | char path[MAXPATHLEN]; | |
785 | int remove_pivotdir = 0; | |
9ba8130c | 786 | int rc; |
cc6f6dd7 DL |
787 | |
788 | /* change into new root fs */ | |
789 | if (chdir(rootfs)) { | |
790 | SYSERROR("can't chdir to new rootfs '%s'", rootfs); | |
791 | return -1; | |
792 | } | |
793 | ||
794 | if (!pivotdir) | |
30c5d292 | 795 | pivotdir = "lxc_putold"; |
cc6f6dd7 | 796 | |
4f9293b1 | 797 | /* compute the full path to pivotdir under rootfs */ |
9ba8130c SH |
798 | rc = snprintf(path, sizeof(path), "%s/%s", rootfs, pivotdir); |
799 | if (rc >= sizeof(path)) { | |
800 | ERROR("pivot dir name too long"); | |
801 | return -1; | |
802 | } | |
cc6f6dd7 DL |
803 | |
804 | if (access(path, F_OK)) { | |
805 | ||
806 | if (mkdir_p(path, 0755)) { | |
807 | SYSERROR("failed to create pivotdir '%s'", path); | |
808 | return -1; | |
809 | } | |
810 | ||
811 | remove_pivotdir = 1; | |
812 | DEBUG("created '%s' directory", path); | |
813 | } | |
814 | ||
815 | DEBUG("mountpoint for old rootfs is '%s'", path); | |
816 | ||
817 | /* pivot_root into our new root fs */ | |
818 | if (pivot_root(".", path)) { | |
819 | SYSERROR("pivot_root syscall failed"); | |
bf601689 MH |
820 | return -1; |
821 | } | |
cc6f6dd7 DL |
822 | |
823 | if (chdir("/")) { | |
824 | SYSERROR("can't chdir to / after pivot_root"); | |
825 | return -1; | |
826 | } | |
827 | ||
828 | DEBUG("pivot_root syscall to '%s' successful", rootfs); | |
829 | ||
830 | /* we switch from absolute path to relative path */ | |
831 | if (umount_oldrootfs(pivotdir)) | |
832 | return -1; | |
bf601689 | 833 | |
c08556c6 DL |
834 | /* remove temporary mount point, we don't consider the removing |
835 | * as fatal */ | |
a91d897a FW |
836 | if (remove_pivotdir && rmdir(pivotdir)) |
837 | WARN("can't remove mountpoint '%s': %m", pivotdir); | |
bf601689 | 838 | |
bf601689 MH |
839 | return 0; |
840 | } | |
841 | ||
33fcb7a0 | 842 | static int setup_rootfs(const struct lxc_rootfs *rootfs) |
0ad19a3f | 843 | { |
33fcb7a0 | 844 | if (!rootfs->path) |
c69bd12f | 845 | return 0; |
0ad19a3f | 846 | |
12297168 | 847 | if (access(rootfs->mount, F_OK)) { |
b1789442 | 848 | SYSERROR("failed to access to '%s', check it is present", |
12297168 | 849 | rootfs->mount); |
b1789442 DL |
850 | return -1; |
851 | } | |
852 | ||
2656d231 | 853 | if (mount_rootfs(rootfs->path, rootfs->mount)) { |
a6afdde9 | 854 | ERROR("failed to mount rootfs"); |
c3f0a28c | 855 | return -1; |
856 | } | |
0ad19a3f | 857 | |
12297168 | 858 | DEBUG("mounted '%s' on '%s'", rootfs->path, rootfs->mount); |
c69bd12f | 859 | |
ac778708 DL |
860 | return 0; |
861 | } | |
862 | ||
863 | int setup_pivot_root(const struct lxc_rootfs *rootfs) | |
864 | { | |
ac778708 DL |
865 | if (!rootfs->path) |
866 | return 0; | |
867 | ||
12297168 | 868 | if (setup_rootfs_pivot_root(rootfs->mount, rootfs->pivot)) { |
cc6f6dd7 | 869 | ERROR("failed to setup pivot root"); |
25368b52 | 870 | return -1; |
c69bd12f DL |
871 | } |
872 | ||
25368b52 | 873 | return 0; |
0ad19a3f | 874 | } |
875 | ||
d852c78c | 876 | static int setup_pts(int pts) |
3c26f34e | 877 | { |
77890c6d SW |
878 | char target[PATH_MAX]; |
879 | ||
d852c78c DL |
880 | if (!pts) |
881 | return 0; | |
3c26f34e | 882 | |
883 | if (!access("/dev/pts/ptmx", F_OK) && umount("/dev/pts")) { | |
36eb9bde | 884 | SYSERROR("failed to umount 'dev/pts'"); |
3c26f34e | 885 | return -1; |
886 | } | |
887 | ||
a6afdde9 DL |
888 | if (mount("devpts", "/dev/pts", "devpts", MS_MGC_VAL, |
889 | "newinstance,ptmxmode=0666")) { | |
36eb9bde | 890 | SYSERROR("failed to mount a new instance of '/dev/pts'"); |
3c26f34e | 891 | return -1; |
892 | } | |
893 | ||
3c26f34e | 894 | if (access("/dev/ptmx", F_OK)) { |
895 | if (!symlink("/dev/pts/ptmx", "/dev/ptmx")) | |
896 | goto out; | |
36eb9bde | 897 | SYSERROR("failed to symlink '/dev/pts/ptmx'->'/dev/ptmx'"); |
3c26f34e | 898 | return -1; |
899 | } | |
900 | ||
77890c6d SW |
901 | if (realpath("/dev/ptmx", target) && !strcmp(target, "/dev/pts/ptmx")) |
902 | goto out; | |
903 | ||
3c26f34e | 904 | /* fallback here, /dev/pts/ptmx exists just mount bind */ |
905 | if (mount("/dev/pts/ptmx", "/dev/ptmx", "none", MS_BIND, 0)) { | |
36eb9bde | 906 | SYSERROR("mount failed '/dev/pts/ptmx'->'/dev/ptmx'"); |
3c26f34e | 907 | return -1; |
908 | } | |
cd54d859 DL |
909 | |
910 | INFO("created new pts instance"); | |
d852c78c | 911 | |
3c26f34e | 912 | out: |
913 | return 0; | |
914 | } | |
915 | ||
cccc74b5 DL |
916 | static int setup_personality(int persona) |
917 | { | |
918 | if (persona == -1) | |
919 | return 0; | |
920 | ||
921 | if (personality(persona) < 0) { | |
922 | SYSERROR("failed to set personality to '0x%x'", persona); | |
923 | return -1; | |
924 | } | |
925 | ||
926 | INFO("set personality to '0x%x'", persona); | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
7c6ef2a2 | 931 | static int setup_dev_console(const struct lxc_rootfs *rootfs, |
33fcb7a0 | 932 | const struct lxc_console *console) |
6e590161 | 933 | { |
63376d7d DL |
934 | char path[MAXPATHLEN]; |
935 | struct stat s; | |
7c6ef2a2 | 936 | int ret; |
52e35957 | 937 | |
7c6ef2a2 SH |
938 | ret = snprintf(path, sizeof(path), "%s/dev/console", rootfs->mount); |
939 | if (ret >= sizeof(path)) { | |
940 | ERROR("console path too long\n"); | |
941 | return -1; | |
942 | } | |
52e35957 | 943 | |
63376d7d | 944 | if (access(path, F_OK)) { |
466978b0 | 945 | WARN("rootfs specified but no console found at '%s'", path); |
63376d7d | 946 | return 0; |
52e35957 DL |
947 | } |
948 | ||
f78a1f32 | 949 | if (console->peer == -1) { |
63376d7d | 950 | INFO("no console output required"); |
f78a1f32 DL |
951 | return 0; |
952 | } | |
ed502555 | 953 | |
63376d7d DL |
954 | if (stat(path, &s)) { |
955 | SYSERROR("failed to stat '%s'", path); | |
956 | return -1; | |
957 | } | |
958 | ||
959 | if (chmod(console->name, s.st_mode)) { | |
960 | SYSERROR("failed to set mode '0%o' to '%s'", | |
961 | s.st_mode, console->name); | |
962 | return -1; | |
963 | } | |
13954cce | 964 | |
63376d7d DL |
965 | if (mount(console->name, path, "none", MS_BIND, 0)) { |
966 | ERROR("failed to mount '%s' on '%s'", console->name, path); | |
6e590161 | 967 | return -1; |
968 | } | |
969 | ||
63376d7d | 970 | INFO("console has been setup"); |
7c6ef2a2 SH |
971 | return 0; |
972 | } | |
973 | ||
974 | static int setup_ttydir_console(const struct lxc_rootfs *rootfs, | |
975 | const struct lxc_console *console, | |
976 | char *ttydir) | |
977 | { | |
978 | char path[MAXPATHLEN], lxcpath[MAXPATHLEN]; | |
979 | int ret; | |
980 | ||
981 | /* create rootfs/dev/<ttydir> directory */ | |
982 | ret = snprintf(path, sizeof(path), "%s/dev/%s", rootfs->mount, | |
983 | ttydir); | |
984 | if (ret >= sizeof(path)) | |
985 | return -1; | |
986 | ret = mkdir(path, 0755); | |
987 | if (ret && errno != EEXIST) { | |
988 | SYSERROR("failed with errno %d to create %s\n", errno, path); | |
989 | return -1; | |
990 | } | |
991 | INFO("created %s\n", path); | |
992 | ||
993 | ret = snprintf(lxcpath, sizeof(lxcpath), "%s/dev/%s/console", | |
994 | rootfs->mount, ttydir); | |
995 | if (ret >= sizeof(lxcpath)) { | |
996 | ERROR("console path too long\n"); | |
997 | return -1; | |
998 | } | |
999 | ||
1000 | snprintf(path, sizeof(path), "%s/dev/console", rootfs->mount); | |
1001 | ret = unlink(path); | |
1002 | if (ret && errno != ENOENT) { | |
1003 | SYSERROR("error unlinking %s\n", path); | |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | ret = creat(lxcpath, 0660); | |
1008 | if (ret==-1 && errno != EEXIST) { | |
1009 | SYSERROR("error %d creating %s\n", errno, lxcpath); | |
1010 | return -1; | |
1011 | } | |
1012 | close(ret); | |
1013 | ||
1014 | if (console->peer == -1) { | |
1015 | INFO("no console output required"); | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | if (mount(console->name, lxcpath, "none", MS_BIND, 0)) { | |
1020 | ERROR("failed to mount '%s' on '%s'", console->name, lxcpath); | |
1021 | return -1; | |
1022 | } | |
1023 | ||
1024 | /* create symlink from rootfs/dev/console to 'lxc/console' */ | |
9ba8130c SH |
1025 | ret = snprintf(lxcpath, sizeof(lxcpath), "%s/console", ttydir); |
1026 | if (ret >= sizeof(lxcpath)) { | |
1027 | ERROR("lxc/console path too long"); | |
1028 | return -1; | |
1029 | } | |
7c6ef2a2 SH |
1030 | ret = symlink(lxcpath, path); |
1031 | if (ret) { | |
1032 | SYSERROR("failed to create symlink for console"); | |
1033 | return -1; | |
1034 | } | |
1035 | ||
1036 | INFO("console has been setup on %s", lxcpath); | |
cd54d859 | 1037 | |
6e590161 | 1038 | return 0; |
1039 | } | |
1040 | ||
7c6ef2a2 SH |
1041 | static int setup_console(const struct lxc_rootfs *rootfs, |
1042 | const struct lxc_console *console, | |
1043 | char *ttydir) | |
1044 | { | |
1045 | /* We don't have a rootfs, /dev/console will be shared */ | |
1046 | if (!rootfs->path) | |
1047 | return 0; | |
1048 | if (!ttydir) | |
1049 | return setup_dev_console(rootfs, console); | |
1050 | ||
1051 | return setup_ttydir_console(rootfs, console, ttydir); | |
1052 | } | |
1053 | ||
102a5303 | 1054 | static int setup_cgroup(const char *name, struct lxc_list *cgroups) |
576f946d | 1055 | { |
102a5303 DL |
1056 | struct lxc_list *iterator; |
1057 | struct lxc_cgroup *cg; | |
88329c69 | 1058 | int ret = -1; |
6f4a3756 | 1059 | |
102a5303 DL |
1060 | if (lxc_list_empty(cgroups)) |
1061 | return 0; | |
6f4a3756 | 1062 | |
102a5303 | 1063 | lxc_list_for_each(iterator, cgroups) { |
13954cce | 1064 | |
102a5303 | 1065 | cg = iterator->elem; |
6f4a3756 | 1066 | |
102a5303 | 1067 | if (lxc_cgroup_set(name, cg->subsystem, cg->value)) |
88329c69 | 1068 | goto out; |
6f4a3756 | 1069 | |
102a5303 | 1070 | DEBUG("cgroup '%s' set to '%s'", cg->subsystem, cg->value); |
6f4a3756 | 1071 | } |
13954cce | 1072 | |
88329c69 | 1073 | ret = 0; |
cd54d859 | 1074 | INFO("cgroup has been setup"); |
88329c69 MN |
1075 | out: |
1076 | return ret; | |
576f946d | 1077 | } |
1078 | ||
998ac676 RT |
1079 | static void parse_mntopt(char *opt, unsigned long *flags, char **data) |
1080 | { | |
1081 | struct mount_opt *mo; | |
1082 | ||
1083 | /* If opt is found in mount_opt, set or clear flags. | |
1084 | * Otherwise append it to data. */ | |
1085 | ||
1086 | for (mo = &mount_opt[0]; mo->name != NULL; mo++) { | |
1087 | if (!strncmp(opt, mo->name, strlen(mo->name))) { | |
1088 | if (mo->clear) | |
1089 | *flags &= ~mo->flag; | |
1090 | else | |
1091 | *flags |= mo->flag; | |
1092 | return; | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | if (strlen(*data)) | |
1097 | strcat(*data, ","); | |
1098 | strcat(*data, opt); | |
1099 | } | |
1100 | ||
911324ef | 1101 | static int parse_mntopts(const char *mntopts, unsigned long *mntflags, |
998ac676 RT |
1102 | char **mntdata) |
1103 | { | |
1104 | char *s, *data; | |
1105 | char *p, *saveptr = NULL; | |
1106 | ||
911324ef | 1107 | *mntdata = NULL; |
91656ce5 | 1108 | *mntflags = 0L; |
911324ef DL |
1109 | |
1110 | if (!mntopts) | |
998ac676 RT |
1111 | return 0; |
1112 | ||
911324ef | 1113 | s = strdup(mntopts); |
998ac676 | 1114 | if (!s) { |
36eb9bde | 1115 | SYSERROR("failed to allocate memory"); |
998ac676 RT |
1116 | return -1; |
1117 | } | |
1118 | ||
1119 | data = malloc(strlen(s) + 1); | |
1120 | if (!data) { | |
36eb9bde | 1121 | SYSERROR("failed to allocate memory"); |
998ac676 RT |
1122 | free(s); |
1123 | return -1; | |
1124 | } | |
1125 | *data = 0; | |
1126 | ||
1127 | for (p = strtok_r(s, ",", &saveptr); p != NULL; | |
1128 | p = strtok_r(NULL, ",", &saveptr)) | |
1129 | parse_mntopt(p, mntflags, &data); | |
1130 | ||
1131 | if (*data) | |
1132 | *mntdata = data; | |
1133 | else | |
1134 | free(data); | |
1135 | free(s); | |
1136 | ||
1137 | return 0; | |
1138 | } | |
1139 | ||
911324ef DL |
1140 | static int mount_entry(const char *fsname, const char *target, |
1141 | const char *fstype, unsigned long mountflags, | |
1142 | const char *data) | |
1143 | { | |
1144 | if (mount(fsname, target, fstype, mountflags & ~MS_REMOUNT, data)) { | |
1145 | SYSERROR("failed to mount '%s' on '%s'", fsname, target); | |
1146 | return -1; | |
1147 | } | |
1148 | ||
1149 | if ((mountflags & MS_REMOUNT) || (mountflags & MS_BIND)) { | |
1150 | ||
1151 | DEBUG("remounting %s on %s to respect bind or remount options", | |
1152 | fsname, target); | |
1153 | ||
1154 | if (mount(fsname, target, fstype, | |
1155 | mountflags | MS_REMOUNT, data)) { | |
1156 | SYSERROR("failed to mount '%s' on '%s'", | |
1157 | fsname, target); | |
1158 | return -1; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | DEBUG("mounted '%s' on '%s', type '%s'", fsname, target, fstype); | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | static inline int mount_entry_on_systemfs(struct mntent *mntent) | |
0ad19a3f | 1168 | { |
998ac676 RT |
1169 | unsigned long mntflags; |
1170 | char *mntdata; | |
911324ef DL |
1171 | int ret; |
1172 | ||
1173 | if (parse_mntopts(mntent->mnt_opts, &mntflags, &mntdata) < 0) { | |
1174 | ERROR("failed to parse mount option '%s'", mntent->mnt_opts); | |
1175 | return -1; | |
1176 | } | |
1177 | ||
1178 | ret = mount_entry(mntent->mnt_fsname, mntent->mnt_dir, | |
1179 | mntent->mnt_type, mntflags, mntdata); | |
1180 | ||
1181 | free(mntdata); | |
1182 | ||
1183 | return ret; | |
1184 | } | |
1185 | ||
1186 | static int mount_entry_on_absolute_rootfs(struct mntent *mntent, | |
80a881b2 SH |
1187 | const struct lxc_rootfs *rootfs, |
1188 | const char *lxc_name) | |
911324ef | 1189 | { |
013bd428 | 1190 | char *aux; |
59760f5d | 1191 | char path[MAXPATHLEN]; |
911324ef DL |
1192 | unsigned long mntflags; |
1193 | char *mntdata; | |
80a881b2 | 1194 | int r, ret = 0, offset; |
0ad19a3f | 1195 | |
911324ef DL |
1196 | if (parse_mntopts(mntent->mnt_opts, &mntflags, &mntdata) < 0) { |
1197 | ERROR("failed to parse mount option '%s'", mntent->mnt_opts); | |
1198 | return -1; | |
1199 | } | |
1bc60a65 | 1200 | |
80a881b2 SH |
1201 | /* if rootfs->path is a blockdev path, allow container fstab to |
1202 | * use /var/lib/lxc/CN/rootfs as the target prefix */ | |
1203 | r = snprintf(path, MAXPATHLEN, "/var/lib/lxc/%s/rootfs", lxc_name); | |
1204 | if (r < 0 || r >= MAXPATHLEN) | |
1205 | goto skipvarlib; | |
1206 | ||
1207 | aux = strstr(mntent->mnt_dir, path); | |
1208 | if (aux) { | |
1209 | offset = strlen(path); | |
1210 | goto skipabs; | |
1211 | } | |
1212 | ||
1213 | skipvarlib: | |
013bd428 DL |
1214 | aux = strstr(mntent->mnt_dir, rootfs->path); |
1215 | if (!aux) { | |
1216 | WARN("ignoring mount point '%s'", mntent->mnt_dir); | |
1217 | goto out; | |
1218 | } | |
80a881b2 SH |
1219 | offset = strlen(rootfs->path); |
1220 | ||
1221 | skipabs: | |
013bd428 | 1222 | |
9ba8130c | 1223 | r = snprintf(path, MAXPATHLEN, "%s/%s", rootfs->mount, |
80a881b2 SH |
1224 | aux + offset); |
1225 | if (r < 0 || r >= MAXPATHLEN) { | |
1226 | WARN("pathnme too long for '%s'", mntent->mnt_dir); | |
1227 | ret = -1; | |
1228 | goto out; | |
1229 | } | |
1230 | ||
d330fe7b | 1231 | |
013bd428 | 1232 | ret = mount_entry(mntent->mnt_fsname, path, mntent->mnt_type, |
911324ef | 1233 | mntflags, mntdata); |
0ad19a3f | 1234 | |
013bd428 | 1235 | out: |
911324ef DL |
1236 | free(mntdata); |
1237 | return ret; | |
1238 | } | |
d330fe7b | 1239 | |
911324ef DL |
1240 | static int mount_entry_on_relative_rootfs(struct mntent *mntent, |
1241 | const char *rootfs) | |
1242 | { | |
1243 | char path[MAXPATHLEN]; | |
1244 | unsigned long mntflags; | |
1245 | char *mntdata; | |
1246 | int ret; | |
d330fe7b | 1247 | |
911324ef DL |
1248 | if (parse_mntopts(mntent->mnt_opts, &mntflags, &mntdata) < 0) { |
1249 | ERROR("failed to parse mount option '%s'", mntent->mnt_opts); | |
1250 | return -1; | |
1251 | } | |
d330fe7b | 1252 | |
911324ef | 1253 | /* relative to root mount point */ |
9ba8130c SH |
1254 | ret = snprintf(path, sizeof(path), "%s/%s", rootfs, mntent->mnt_dir); |
1255 | if (ret >= sizeof(path)) { | |
1256 | ERROR("path name too long"); | |
1257 | return -1; | |
1258 | } | |
911324ef DL |
1259 | |
1260 | ret = mount_entry(mntent->mnt_fsname, path, mntent->mnt_type, | |
1261 | mntflags, mntdata); | |
1262 | ||
1263 | free(mntdata); | |
998ac676 | 1264 | |
911324ef DL |
1265 | return ret; |
1266 | } | |
1267 | ||
80a881b2 SH |
1268 | static int mount_file_entries(const struct lxc_rootfs *rootfs, FILE *file, |
1269 | const char *lxc_name) | |
911324ef DL |
1270 | { |
1271 | struct mntent *mntent; | |
1272 | int ret = -1; | |
e76b8764 | 1273 | |
911324ef | 1274 | while ((mntent = getmntent(file))) { |
e76b8764 | 1275 | |
911324ef DL |
1276 | if (!rootfs->path) { |
1277 | if (mount_entry_on_systemfs(mntent)) | |
e76b8764 | 1278 | goto out; |
911324ef | 1279 | continue; |
e76b8764 CDC |
1280 | } |
1281 | ||
911324ef DL |
1282 | /* We have a separate root, mounts are relative to it */ |
1283 | if (mntent->mnt_dir[0] != '/') { | |
1284 | if (mount_entry_on_relative_rootfs(mntent, | |
1285 | rootfs->mount)) | |
1286 | goto out; | |
1287 | continue; | |
1288 | } | |
cd54d859 | 1289 | |
80a881b2 | 1290 | if (mount_entry_on_absolute_rootfs(mntent, rootfs, lxc_name)) |
911324ef | 1291 | goto out; |
0ad19a3f | 1292 | } |
cd54d859 | 1293 | |
0ad19a3f | 1294 | ret = 0; |
cd54d859 DL |
1295 | |
1296 | INFO("mount points have been setup"); | |
0ad19a3f | 1297 | out: |
e7938e9e MN |
1298 | return ret; |
1299 | } | |
1300 | ||
80a881b2 SH |
1301 | static int setup_mount(const struct lxc_rootfs *rootfs, const char *fstab, |
1302 | const char *lxc_name) | |
e7938e9e MN |
1303 | { |
1304 | FILE *file; | |
1305 | int ret; | |
1306 | ||
1307 | if (!fstab) | |
1308 | return 0; | |
1309 | ||
1310 | file = setmntent(fstab, "r"); | |
1311 | if (!file) { | |
1312 | SYSERROR("failed to use '%s'", fstab); | |
1313 | return -1; | |
1314 | } | |
1315 | ||
80a881b2 | 1316 | ret = mount_file_entries(rootfs, file, lxc_name); |
e7938e9e | 1317 | |
0ad19a3f | 1318 | endmntent(file); |
1319 | return ret; | |
1320 | } | |
1321 | ||
80a881b2 SH |
1322 | static int setup_mount_entries(const struct lxc_rootfs *rootfs, struct lxc_list *mount, |
1323 | const char *lxc_name) | |
e7938e9e MN |
1324 | { |
1325 | FILE *file; | |
1326 | struct lxc_list *iterator; | |
1327 | char *mount_entry; | |
1328 | int ret; | |
1329 | ||
1330 | file = tmpfile(); | |
1331 | if (!file) { | |
1332 | ERROR("tmpfile error: %m"); | |
1333 | return -1; | |
1334 | } | |
1335 | ||
1336 | lxc_list_for_each(iterator, mount) { | |
1337 | mount_entry = iterator->elem; | |
1d6b1976 | 1338 | fprintf(file, "%s\n", mount_entry); |
e7938e9e MN |
1339 | } |
1340 | ||
1341 | rewind(file); | |
1342 | ||
80a881b2 | 1343 | ret = mount_file_entries(rootfs, file, lxc_name); |
e7938e9e MN |
1344 | |
1345 | fclose(file); | |
1346 | return ret; | |
1347 | } | |
1348 | ||
81810dd1 DL |
1349 | static int setup_caps(struct lxc_list *caps) |
1350 | { | |
1351 | struct lxc_list *iterator; | |
1352 | char *drop_entry; | |
d55bc1ad | 1353 | char *ptr; |
81810dd1 DL |
1354 | int i, capid; |
1355 | ||
1356 | lxc_list_for_each(iterator, caps) { | |
1357 | ||
1358 | drop_entry = iterator->elem; | |
1359 | ||
1360 | capid = -1; | |
1361 | ||
1362 | for (i = 0; i < sizeof(caps_opt)/sizeof(caps_opt[0]); i++) { | |
1363 | ||
1364 | if (strcmp(drop_entry, caps_opt[i].name)) | |
1365 | continue; | |
1366 | ||
1367 | capid = caps_opt[i].value; | |
1368 | break; | |
1369 | } | |
1370 | ||
d55bc1ad CS |
1371 | if (capid < 0) { |
1372 | /* try to see if it's numeric, so the user may specify | |
1373 | * capabilities that the running kernel knows about but | |
1374 | * we don't */ | |
1375 | capid = strtol(drop_entry, &ptr, 10); | |
1376 | if (!ptr || *ptr != '\0' || | |
1377 | capid == LONG_MIN || capid == LONG_MAX) | |
1378 | /* not a valid number */ | |
1379 | capid = -1; | |
1380 | else if (capid > lxc_caps_last_cap()) | |
1381 | /* we have a number but it's not a valid | |
1382 | * capability */ | |
1383 | capid = -1; | |
1384 | } | |
1385 | ||
81810dd1 | 1386 | if (capid < 0) { |
1e11be34 DL |
1387 | ERROR("unknown capability %s", drop_entry); |
1388 | return -1; | |
81810dd1 DL |
1389 | } |
1390 | ||
1391 | DEBUG("drop capability '%s' (%d)", drop_entry, capid); | |
1392 | ||
1393 | if (prctl(PR_CAPBSET_DROP, capid, 0, 0, 0)) { | |
1394 | SYSERROR("failed to remove %s capability", drop_entry); | |
1395 | return -1; | |
1396 | } | |
1397 | ||
1398 | } | |
1399 | ||
1400 | DEBUG("capabilities has been setup"); | |
1401 | ||
1402 | return 0; | |
1403 | } | |
1404 | ||
0ad19a3f | 1405 | static int setup_hw_addr(char *hwaddr, const char *ifname) |
1406 | { | |
1407 | struct sockaddr sockaddr; | |
1408 | struct ifreq ifr; | |
1409 | int ret, fd; | |
1410 | ||
3cfc0f3a MN |
1411 | ret = lxc_convert_mac(hwaddr, &sockaddr); |
1412 | if (ret) { | |
1413 | ERROR("mac address '%s' conversion failed : %s", | |
1414 | hwaddr, strerror(-ret)); | |
0ad19a3f | 1415 | return -1; |
1416 | } | |
1417 | ||
1418 | memcpy(ifr.ifr_name, ifname, IFNAMSIZ); | |
1419 | memcpy((char *) &ifr.ifr_hwaddr, (char *) &sockaddr, sizeof(sockaddr)); | |
1420 | ||
1421 | fd = socket(AF_INET, SOCK_DGRAM, 0); | |
1422 | if (fd < 0) { | |
3ab87b66 | 1423 | ERROR("socket failure : %s", strerror(errno)); |
0ad19a3f | 1424 | return -1; |
1425 | } | |
1426 | ||
1427 | ret = ioctl(fd, SIOCSIFHWADDR, &ifr); | |
1428 | close(fd); | |
1429 | if (ret) | |
3ab87b66 | 1430 | ERROR("ioctl failure : %s", strerror(errno)); |
0ad19a3f | 1431 | |
cd54d859 DL |
1432 | DEBUG("mac address '%s' on '%s' has been setup", hwaddr, ifname); |
1433 | ||
0ad19a3f | 1434 | return ret; |
1435 | } | |
1436 | ||
82d5ae15 | 1437 | static int setup_ipv4_addr(struct lxc_list *ip, int ifindex) |
0ad19a3f | 1438 | { |
82d5ae15 DL |
1439 | struct lxc_list *iterator; |
1440 | struct lxc_inetdev *inetdev; | |
3cfc0f3a | 1441 | int err; |
0ad19a3f | 1442 | |
82d5ae15 DL |
1443 | lxc_list_for_each(iterator, ip) { |
1444 | ||
1445 | inetdev = iterator->elem; | |
1446 | ||
0093bb8c DL |
1447 | err = lxc_ipv4_addr_add(ifindex, &inetdev->addr, |
1448 | &inetdev->bcast, inetdev->prefix); | |
3cfc0f3a MN |
1449 | if (err) { |
1450 | ERROR("failed to setup_ipv4_addr ifindex %d : %s", | |
1451 | ifindex, strerror(-err)); | |
82d5ae15 DL |
1452 | return -1; |
1453 | } | |
1454 | } | |
1455 | ||
1456 | return 0; | |
0ad19a3f | 1457 | } |
1458 | ||
82d5ae15 | 1459 | static int setup_ipv6_addr(struct lxc_list *ip, int ifindex) |
0ad19a3f | 1460 | { |
82d5ae15 | 1461 | struct lxc_list *iterator; |
7fa9074f | 1462 | struct lxc_inet6dev *inet6dev; |
3cfc0f3a | 1463 | int err; |
0ad19a3f | 1464 | |
82d5ae15 DL |
1465 | lxc_list_for_each(iterator, ip) { |
1466 | ||
1467 | inet6dev = iterator->elem; | |
1468 | ||
b3df193c | 1469 | err = lxc_ipv6_addr_add(ifindex, &inet6dev->addr, |
0093bb8c DL |
1470 | &inet6dev->mcast, &inet6dev->acast, |
1471 | inet6dev->prefix); | |
3cfc0f3a MN |
1472 | if (err) { |
1473 | ERROR("failed to setup_ipv6_addr ifindex %d : %s", | |
1474 | ifindex, strerror(-err)); | |
82d5ae15 | 1475 | return -1; |
3cfc0f3a | 1476 | } |
82d5ae15 DL |
1477 | } |
1478 | ||
1479 | return 0; | |
0ad19a3f | 1480 | } |
1481 | ||
82d5ae15 | 1482 | static int setup_netdev(struct lxc_netdev *netdev) |
0ad19a3f | 1483 | { |
0ad19a3f | 1484 | char ifname[IFNAMSIZ]; |
0ad19a3f | 1485 | char *current_ifname = ifname; |
3cfc0f3a | 1486 | int err; |
0ad19a3f | 1487 | |
82d5ae15 DL |
1488 | /* empty network namespace */ |
1489 | if (!netdev->ifindex) { | |
b0efbac4 | 1490 | if (netdev->flags & IFF_UP) { |
d472214b | 1491 | err = lxc_netdev_up("lo"); |
3cfc0f3a MN |
1492 | if (err) { |
1493 | ERROR("failed to set the loopback up : %s", | |
1494 | strerror(-err)); | |
82d5ae15 DL |
1495 | return -1; |
1496 | } | |
82d5ae15 | 1497 | } |
7b57e8b6 | 1498 | return 0; |
0ad19a3f | 1499 | } |
13954cce | 1500 | |
82d5ae15 DL |
1501 | /* retrieve the name of the interface */ |
1502 | if (!if_indextoname(netdev->ifindex, current_ifname)) { | |
36eb9bde | 1503 | ERROR("no interface corresponding to index '%d'", |
82d5ae15 | 1504 | netdev->ifindex); |
0ad19a3f | 1505 | return -1; |
1506 | } | |
13954cce | 1507 | |
018ef520 | 1508 | /* default: let the system to choose one interface name */ |
9d083402 | 1509 | if (!netdev->name) |
fb6d9b2f DL |
1510 | netdev->name = netdev->type == LXC_NET_PHYS ? |
1511 | netdev->link : "eth%d"; | |
018ef520 | 1512 | |
82d5ae15 | 1513 | /* rename the interface name */ |
b84f58b9 | 1514 | err = lxc_netdev_rename_by_name(ifname, netdev->name); |
3cfc0f3a MN |
1515 | if (err) { |
1516 | ERROR("failed to rename %s->%s : %s", ifname, netdev->name, | |
1517 | strerror(-err)); | |
018ef520 DL |
1518 | return -1; |
1519 | } | |
1520 | ||
1521 | /* Re-read the name of the interface because its name has changed | |
1522 | * and would be automatically allocated by the system | |
1523 | */ | |
82d5ae15 | 1524 | if (!if_indextoname(netdev->ifindex, current_ifname)) { |
018ef520 | 1525 | ERROR("no interface corresponding to index '%d'", |
82d5ae15 | 1526 | netdev->ifindex); |
018ef520 | 1527 | return -1; |
0ad19a3f | 1528 | } |
1529 | ||
82d5ae15 DL |
1530 | /* set a mac address */ |
1531 | if (netdev->hwaddr) { | |
1532 | if (setup_hw_addr(netdev->hwaddr, current_ifname)) { | |
36eb9bde | 1533 | ERROR("failed to setup hw address for '%s'", |
82d5ae15 | 1534 | current_ifname); |
0ad19a3f | 1535 | return -1; |
1536 | } | |
1537 | } | |
1538 | ||
82d5ae15 DL |
1539 | /* setup ipv4 addresses on the interface */ |
1540 | if (setup_ipv4_addr(&netdev->ipv4, netdev->ifindex)) { | |
36eb9bde | 1541 | ERROR("failed to setup ip addresses for '%s'", |
0ad19a3f | 1542 | ifname); |
1543 | return -1; | |
1544 | } | |
1545 | ||
82d5ae15 DL |
1546 | /* setup ipv6 addresses on the interface */ |
1547 | if (setup_ipv6_addr(&netdev->ipv6, netdev->ifindex)) { | |
36eb9bde | 1548 | ERROR("failed to setup ipv6 addresses for '%s'", |
0ad19a3f | 1549 | ifname); |
1550 | return -1; | |
1551 | } | |
1552 | ||
82d5ae15 | 1553 | /* set the network device up */ |
b0efbac4 | 1554 | if (netdev->flags & IFF_UP) { |
3cfc0f3a MN |
1555 | int err; |
1556 | ||
d472214b | 1557 | err = lxc_netdev_up(current_ifname); |
3cfc0f3a MN |
1558 | if (err) { |
1559 | ERROR("failed to set '%s' up : %s", current_ifname, | |
1560 | strerror(-err)); | |
0ad19a3f | 1561 | return -1; |
1562 | } | |
1563 | ||
1564 | /* the network is up, make the loopback up too */ | |
d472214b | 1565 | err = lxc_netdev_up("lo"); |
3cfc0f3a MN |
1566 | if (err) { |
1567 | ERROR("failed to set the loopback up : %s", | |
1568 | strerror(-err)); | |
0ad19a3f | 1569 | return -1; |
1570 | } | |
1571 | } | |
1572 | ||
f8fee0e2 MK |
1573 | /* We can only set up the default routes after bringing |
1574 | * up the interface, sine bringing up the interface adds | |
1575 | * the link-local routes and we can't add a default | |
1576 | * route if the gateway is not reachable. */ | |
1577 | ||
1578 | /* setup ipv4 gateway on the interface */ | |
1579 | if (netdev->ipv4_gateway) { | |
1580 | if (!(netdev->flags & IFF_UP)) { | |
1581 | ERROR("Cannot add ipv4 gateway for %s when not bringing up the interface", ifname); | |
1582 | return -1; | |
1583 | } | |
1584 | ||
1585 | if (lxc_list_empty(&netdev->ipv4)) { | |
1586 | ERROR("Cannot add ipv4 gateway for %s when not assigning an address", ifname); | |
1587 | return -1; | |
1588 | } | |
1589 | ||
1590 | err = lxc_ipv4_gateway_add(netdev->ifindex, netdev->ipv4_gateway); | |
1591 | if (err) { | |
1592 | ERROR("failed to setup ipv4 gateway for '%s': %s", | |
1593 | ifname, strerror(-err)); | |
19a26f82 MK |
1594 | if (netdev->ipv4_gateway_auto) { |
1595 | char buf[INET_ADDRSTRLEN]; | |
1596 | inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf)); | |
1597 | ERROR("tried to set autodetected ipv4 gateway '%s'", buf); | |
1598 | } | |
f8fee0e2 MK |
1599 | return -1; |
1600 | } | |
1601 | } | |
1602 | ||
1603 | /* setup ipv6 gateway on the interface */ | |
1604 | if (netdev->ipv6_gateway) { | |
1605 | if (!(netdev->flags & IFF_UP)) { | |
1606 | ERROR("Cannot add ipv6 gateway for %s when not bringing up the interface", ifname); | |
1607 | return -1; | |
1608 | } | |
1609 | ||
1610 | if (lxc_list_empty(&netdev->ipv6) && !IN6_IS_ADDR_LINKLOCAL(netdev->ipv6_gateway)) { | |
1611 | ERROR("Cannot add ipv6 gateway for %s when not assigning an address", ifname); | |
1612 | return -1; | |
1613 | } | |
1614 | ||
1615 | err = lxc_ipv6_gateway_add(netdev->ifindex, netdev->ipv6_gateway); | |
1616 | if (err) { | |
1617 | ERROR("failed to setup ipv6 gateway for '%s': %s", | |
1618 | ifname, strerror(-err)); | |
19a26f82 MK |
1619 | if (netdev->ipv6_gateway_auto) { |
1620 | char buf[INET6_ADDRSTRLEN]; | |
1621 | inet_ntop(AF_INET, netdev->ipv6_gateway, buf, sizeof(buf)); | |
1622 | ERROR("tried to set autodetected ipv6 gateway '%s'", buf); | |
1623 | } | |
f8fee0e2 MK |
1624 | return -1; |
1625 | } | |
1626 | } | |
1627 | ||
cd54d859 DL |
1628 | DEBUG("'%s' has been setup", current_ifname); |
1629 | ||
0ad19a3f | 1630 | return 0; |
1631 | } | |
1632 | ||
5f4535a3 | 1633 | static int setup_network(struct lxc_list *network) |
0ad19a3f | 1634 | { |
82d5ae15 | 1635 | struct lxc_list *iterator; |
82d5ae15 | 1636 | struct lxc_netdev *netdev; |
0ad19a3f | 1637 | |
5f4535a3 | 1638 | lxc_list_for_each(iterator, network) { |
cd54d859 | 1639 | |
5f4535a3 | 1640 | netdev = iterator->elem; |
82d5ae15 DL |
1641 | |
1642 | if (setup_netdev(netdev)) { | |
1643 | ERROR("failed to setup netdev"); | |
1644 | return -1; | |
1645 | } | |
1646 | } | |
cd54d859 | 1647 | |
5f4535a3 DL |
1648 | if (!lxc_list_empty(network)) |
1649 | INFO("network has been setup"); | |
cd54d859 DL |
1650 | |
1651 | return 0; | |
0ad19a3f | 1652 | } |
1653 | ||
49684c0b CS |
1654 | static int setup_private_host_hw_addr(char *veth1) |
1655 | { | |
1656 | struct ifreq ifr; | |
1657 | int err; | |
1658 | int sockfd; | |
1659 | ||
1660 | sockfd = socket(AF_INET, SOCK_DGRAM, 0); | |
1661 | if (sockfd < 0) | |
1662 | return -errno; | |
1663 | ||
1664 | snprintf((char *)ifr.ifr_name, IFNAMSIZ, "%s", veth1); | |
1665 | err = ioctl(sockfd, SIOCGIFHWADDR, &ifr); | |
1666 | if (err < 0) { | |
1667 | close(sockfd); | |
1668 | return -errno; | |
1669 | } | |
1670 | ||
1671 | ifr.ifr_hwaddr.sa_data[0] = 0xfe; | |
1672 | err = ioctl(sockfd, SIOCSIFHWADDR, &ifr); | |
1673 | close(sockfd); | |
1674 | if (err < 0) | |
1675 | return -errno; | |
1676 | ||
7ad84da7 DL |
1677 | DEBUG("mac address of host interface '%s' changed to private " |
1678 | "%02x:%02x:%02x:%02x:%02x:%02x", veth1, | |
1679 | ifr.ifr_hwaddr.sa_data[0] & 0xff, | |
1680 | ifr.ifr_hwaddr.sa_data[1] & 0xff, | |
1681 | ifr.ifr_hwaddr.sa_data[2] & 0xff, | |
1682 | ifr.ifr_hwaddr.sa_data[3] & 0xff, | |
1683 | ifr.ifr_hwaddr.sa_data[4] & 0xff, | |
1684 | ifr.ifr_hwaddr.sa_data[5] & 0xff); | |
49684c0b CS |
1685 | |
1686 | return 0; | |
1687 | } | |
1688 | ||
7b379ab3 | 1689 | struct lxc_conf *lxc_conf_init(void) |
089cd8b8 | 1690 | { |
7b379ab3 | 1691 | struct lxc_conf *new; |
26ddeedd | 1692 | int i; |
7b379ab3 MN |
1693 | |
1694 | new = malloc(sizeof(*new)); | |
1695 | if (!new) { | |
1696 | ERROR("lxc_conf_init : %m"); | |
1697 | return NULL; | |
1698 | } | |
1699 | memset(new, 0, sizeof(*new)); | |
1700 | ||
cccc74b5 | 1701 | new->personality = -1; |
28a4b0e5 | 1702 | new->console.path = NULL; |
63376d7d DL |
1703 | new->console.peer = -1; |
1704 | new->console.master = -1; | |
1705 | new->console.slave = -1; | |
1706 | new->console.name[0] = '\0'; | |
12297168 | 1707 | new->rootfs.mount = LXCROOTFSMOUNT; |
7b379ab3 MN |
1708 | lxc_list_init(&new->cgroup); |
1709 | lxc_list_init(&new->network); | |
1710 | lxc_list_init(&new->mount_list); | |
81810dd1 | 1711 | lxc_list_init(&new->caps); |
26ddeedd SH |
1712 | for (i=0; i<NUM_LXC_HOOKS; i++) |
1713 | lxc_list_init(&new->hooks[i]); | |
e075f5d9 SH |
1714 | #if HAVE_APPARMOR |
1715 | new->aa_profile = NULL; | |
1716 | #endif | |
1717 | #if HAVE_APPARMOR /* || HAVE_SMACK || HAVE_SELINUX */ | |
1718 | new->lsm_umount_proc = 0; | |
1719 | #endif | |
7b379ab3 MN |
1720 | |
1721 | return new; | |
089cd8b8 DL |
1722 | } |
1723 | ||
e3b4c4c4 | 1724 | static int instanciate_veth(struct lxc_handler *handler, struct lxc_netdev *netdev) |
0ad19a3f | 1725 | { |
8634bc19 | 1726 | char veth1buf[IFNAMSIZ], *veth1; |
0e391e57 | 1727 | char veth2buf[IFNAMSIZ], *veth2; |
3cfc0f3a | 1728 | int err; |
13954cce | 1729 | |
e892973e DL |
1730 | if (netdev->priv.veth_attr.pair) |
1731 | veth1 = netdev->priv.veth_attr.pair; | |
8634bc19 | 1732 | else { |
9ba8130c SH |
1733 | err = snprintf(veth1buf, sizeof(veth1buf), "vethXXXXXX"); |
1734 | if (err >= sizeof(veth1buf)) { /* can't *really* happen, but... */ | |
1735 | ERROR("veth1 name too long"); | |
1736 | return -1; | |
1737 | } | |
0e391e57 | 1738 | veth1 = mktemp(veth1buf); |
8634bc19 | 1739 | } |
82d5ae15 | 1740 | |
0e391e57 DL |
1741 | snprintf(veth2buf, sizeof(veth2buf), "vethXXXXXX"); |
1742 | veth2 = mktemp(veth2buf); | |
82d5ae15 DL |
1743 | |
1744 | if (!strlen(veth1) || !strlen(veth2)) { | |
1745 | ERROR("failed to allocate a temporary name"); | |
1746 | return -1; | |
0ad19a3f | 1747 | } |
1748 | ||
3cfc0f3a MN |
1749 | err = lxc_veth_create(veth1, veth2); |
1750 | if (err) { | |
1751 | ERROR("failed to create %s-%s : %s", veth1, veth2, | |
1752 | strerror(-err)); | |
6ab9ab6d | 1753 | return -1; |
0ad19a3f | 1754 | } |
13954cce | 1755 | |
49684c0b CS |
1756 | /* changing the high byte of the mac address to 0xfe, the bridge interface |
1757 | * will always keep the host's mac address and not take the mac address | |
1758 | * of a container */ | |
1759 | err = setup_private_host_hw_addr(veth1); | |
1760 | if (err) { | |
1761 | ERROR("failed to change mac address of host interface '%s' : %s", | |
1762 | veth1, strerror(-err)); | |
1763 | goto out_delete; | |
1764 | } | |
1765 | ||
82d5ae15 | 1766 | if (netdev->mtu) { |
d472214b | 1767 | err = lxc_netdev_set_mtu(veth1, atoi(netdev->mtu)); |
3cfc0f3a | 1768 | if (!err) |
d472214b | 1769 | err = lxc_netdev_set_mtu(veth2, atoi(netdev->mtu)); |
3cfc0f3a MN |
1770 | if (err) { |
1771 | ERROR("failed to set mtu '%s' for %s-%s : %s", | |
1772 | netdev->mtu, veth1, veth2, strerror(-err)); | |
eb14c10a | 1773 | goto out_delete; |
75d09f83 DL |
1774 | } |
1775 | } | |
1776 | ||
3cfc0f3a MN |
1777 | if (netdev->link) { |
1778 | err = lxc_bridge_attach(netdev->link, veth1); | |
1779 | if (err) { | |
1780 | ERROR("failed to attach '%s' to the bridge '%s' : %s", | |
1781 | veth1, netdev->link, strerror(-err)); | |
1782 | goto out_delete; | |
1783 | } | |
eb14c10a DL |
1784 | } |
1785 | ||
82d5ae15 DL |
1786 | netdev->ifindex = if_nametoindex(veth2); |
1787 | if (!netdev->ifindex) { | |
36eb9bde | 1788 | ERROR("failed to retrieve the index for %s", veth2); |
eb14c10a DL |
1789 | goto out_delete; |
1790 | } | |
1791 | ||
d472214b | 1792 | err = lxc_netdev_up(veth1); |
6e35af2e DL |
1793 | if (err) { |
1794 | ERROR("failed to set %s up : %s", veth1, strerror(-err)); | |
1795 | goto out_delete; | |
0ad19a3f | 1796 | } |
1797 | ||
e3b4c4c4 | 1798 | if (netdev->upscript) { |
751d9dcd DL |
1799 | err = run_script(handler->name, "net", netdev->upscript, "up", |
1800 | "veth", veth1, (char*) NULL); | |
1801 | if (err) | |
e3b4c4c4 | 1802 | goto out_delete; |
e3b4c4c4 ST |
1803 | } |
1804 | ||
82d5ae15 DL |
1805 | DEBUG("instanciated veth '%s/%s', index is '%d'", |
1806 | veth1, veth2, netdev->ifindex); | |
1807 | ||
6ab9ab6d | 1808 | return 0; |
eb14c10a DL |
1809 | |
1810 | out_delete: | |
b84f58b9 | 1811 | lxc_netdev_delete_by_name(veth1); |
6ab9ab6d | 1812 | return -1; |
13954cce | 1813 | } |
d957ae2d | 1814 | |
e3b4c4c4 | 1815 | static int instanciate_macvlan(struct lxc_handler *handler, struct lxc_netdev *netdev) |
0ad19a3f | 1816 | { |
0e391e57 | 1817 | char peerbuf[IFNAMSIZ], *peer; |
3cfc0f3a | 1818 | int err; |
d957ae2d MT |
1819 | |
1820 | if (!netdev->link) { | |
1821 | ERROR("no link specified for macvlan netdev"); | |
1822 | return -1; | |
1823 | } | |
13954cce | 1824 | |
9ba8130c SH |
1825 | err = snprintf(peerbuf, sizeof(peerbuf), "mcXXXXXX"); |
1826 | if (err >= sizeof(peerbuf)) | |
1827 | return -1; | |
82d5ae15 | 1828 | |
0e391e57 | 1829 | peer = mktemp(peerbuf); |
82d5ae15 DL |
1830 | if (!strlen(peer)) { |
1831 | ERROR("failed to make a temporary name"); | |
1832 | return -1; | |
0ad19a3f | 1833 | } |
1834 | ||
3cfc0f3a MN |
1835 | err = lxc_macvlan_create(netdev->link, peer, |
1836 | netdev->priv.macvlan_attr.mode); | |
1837 | if (err) { | |
1838 | ERROR("failed to create macvlan interface '%s' on '%s' : %s", | |
1839 | peer, netdev->link, strerror(-err)); | |
d957ae2d | 1840 | return -1; |
0ad19a3f | 1841 | } |
1842 | ||
82d5ae15 DL |
1843 | netdev->ifindex = if_nametoindex(peer); |
1844 | if (!netdev->ifindex) { | |
36eb9bde | 1845 | ERROR("failed to retrieve the index for %s", peer); |
b84f58b9 | 1846 | lxc_netdev_delete_by_name(peer); |
d957ae2d | 1847 | return -1; |
22ebac19 | 1848 | } |
1849 | ||
e3b4c4c4 | 1850 | if (netdev->upscript) { |
751d9dcd DL |
1851 | err = run_script(handler->name, "net", netdev->upscript, "up", |
1852 | "macvlan", netdev->link, (char*) NULL); | |
1853 | if (err) | |
e3b4c4c4 | 1854 | return -1; |
e3b4c4c4 ST |
1855 | } |
1856 | ||
e892973e DL |
1857 | DEBUG("instanciated macvlan '%s', index is '%d' and mode '%d'", |
1858 | peer, netdev->ifindex, netdev->priv.macvlan_attr.mode); | |
0ad19a3f | 1859 | |
d957ae2d | 1860 | return 0; |
0ad19a3f | 1861 | } |
1862 | ||
26c39028 | 1863 | /* XXX: merge with instanciate_macvlan */ |
e3b4c4c4 | 1864 | static int instanciate_vlan(struct lxc_handler *handler, struct lxc_netdev *netdev) |
26c39028 JHS |
1865 | { |
1866 | char peer[IFNAMSIZ]; | |
3cfc0f3a | 1867 | int err; |
26c39028 JHS |
1868 | |
1869 | if (!netdev->link) { | |
1870 | ERROR("no link specified for vlan netdev"); | |
1871 | return -1; | |
1872 | } | |
1873 | ||
9ba8130c SH |
1874 | err = snprintf(peer, sizeof(peer), "vlan%d", netdev->priv.vlan_attr.vid); |
1875 | if (err >= sizeof(peer)) { | |
1876 | ERROR("peer name too long"); | |
1877 | return -1; | |
1878 | } | |
26c39028 | 1879 | |
3cfc0f3a MN |
1880 | err = lxc_vlan_create(netdev->link, peer, netdev->priv.vlan_attr.vid); |
1881 | if (err) { | |
1882 | ERROR("failed to create vlan interface '%s' on '%s' : %s", | |
1883 | peer, netdev->link, strerror(-err)); | |
26c39028 JHS |
1884 | return -1; |
1885 | } | |
1886 | ||
1887 | netdev->ifindex = if_nametoindex(peer); | |
1888 | if (!netdev->ifindex) { | |
1889 | ERROR("failed to retrieve the ifindex for %s", peer); | |
b84f58b9 | 1890 | lxc_netdev_delete_by_name(peer); |
26c39028 JHS |
1891 | return -1; |
1892 | } | |
1893 | ||
e892973e DL |
1894 | DEBUG("instanciated vlan '%s', ifindex is '%d'", " vlan1000", |
1895 | netdev->ifindex); | |
1896 | ||
26c39028 JHS |
1897 | return 0; |
1898 | } | |
1899 | ||
e3b4c4c4 | 1900 | static int instanciate_phys(struct lxc_handler *handler, struct lxc_netdev *netdev) |
0ad19a3f | 1901 | { |
6168e99f DL |
1902 | if (!netdev->link) { |
1903 | ERROR("no link specified for the physical interface"); | |
1904 | return -1; | |
1905 | } | |
1906 | ||
9d083402 | 1907 | netdev->ifindex = if_nametoindex(netdev->link); |
82d5ae15 | 1908 | if (!netdev->ifindex) { |
9d083402 | 1909 | ERROR("failed to retrieve the index for %s", netdev->link); |
0ad19a3f | 1910 | return -1; |
1911 | } | |
1912 | ||
e3b4c4c4 ST |
1913 | if (netdev->upscript) { |
1914 | int err; | |
751d9dcd DL |
1915 | err = run_script(handler->name, "net", netdev->upscript, |
1916 | "up", "phys", netdev->link, (char*) NULL); | |
1917 | if (err) | |
e3b4c4c4 | 1918 | return -1; |
e3b4c4c4 ST |
1919 | } |
1920 | ||
82d5ae15 | 1921 | return 0; |
0ad19a3f | 1922 | } |
1923 | ||
e3b4c4c4 | 1924 | static int instanciate_empty(struct lxc_handler *handler, struct lxc_netdev *netdev) |
0ad19a3f | 1925 | { |
82d5ae15 | 1926 | netdev->ifindex = 0; |
e3b4c4c4 ST |
1927 | if (netdev->upscript) { |
1928 | int err; | |
751d9dcd DL |
1929 | err = run_script(handler->name, "net", netdev->upscript, |
1930 | "up", "empty", (char*) NULL); | |
1931 | if (err) | |
e3b4c4c4 | 1932 | return -1; |
e3b4c4c4 | 1933 | } |
82d5ae15 | 1934 | return 0; |
0ad19a3f | 1935 | } |
1936 | ||
e3b4c4c4 | 1937 | int lxc_create_network(struct lxc_handler *handler) |
0ad19a3f | 1938 | { |
e3b4c4c4 | 1939 | struct lxc_list *network = &handler->conf->network; |
82d5ae15 | 1940 | struct lxc_list *iterator; |
82d5ae15 | 1941 | struct lxc_netdev *netdev; |
0ad19a3f | 1942 | |
5f4535a3 | 1943 | lxc_list_for_each(iterator, network) { |
0ad19a3f | 1944 | |
5f4535a3 | 1945 | netdev = iterator->elem; |
13954cce | 1946 | |
24654103 | 1947 | if (netdev->type < 0 || netdev->type > LXC_NET_MAXCONFTYPE) { |
82d5ae15 | 1948 | ERROR("invalid network configuration type '%d'", |
5f4535a3 | 1949 | netdev->type); |
82d5ae15 DL |
1950 | return -1; |
1951 | } | |
0ad19a3f | 1952 | |
e3b4c4c4 | 1953 | if (netdev_conf[netdev->type](handler, netdev)) { |
82d5ae15 DL |
1954 | ERROR("failed to create netdev"); |
1955 | return -1; | |
1956 | } | |
e3b4c4c4 | 1957 | |
0ad19a3f | 1958 | } |
1959 | ||
1960 | return 0; | |
1961 | } | |
1962 | ||
7fef7a06 DL |
1963 | void lxc_delete_network(struct lxc_list *network) |
1964 | { | |
1965 | struct lxc_list *iterator; | |
1966 | struct lxc_netdev *netdev; | |
1967 | ||
1968 | lxc_list_for_each(iterator, network) { | |
1969 | netdev = iterator->elem; | |
d472214b DL |
1970 | if (netdev->ifindex == 0) |
1971 | continue; | |
1972 | ||
d8f8e352 DL |
1973 | if (netdev->type == LXC_NET_PHYS) { |
1974 | if (lxc_netdev_rename_by_index(netdev->ifindex, netdev->link)) | |
1975 | WARN("failed to rename to the initial name the " \ | |
1976 | "netdev '%s'", netdev->link); | |
d472214b | 1977 | continue; |
d8f8e352 | 1978 | } |
d472214b | 1979 | |
d8f8e352 DL |
1980 | /* Recent kernel remove the virtual interfaces when the network |
1981 | * namespace is destroyed but in case we did not moved the | |
1982 | * interface to the network namespace, we have to destroy it | |
1983 | */ | |
1984 | if (lxc_netdev_delete_by_index(netdev->ifindex)) | |
1985 | WARN("failed to remove interface '%s'", netdev->name); | |
7fef7a06 DL |
1986 | } |
1987 | } | |
1988 | ||
5f4535a3 | 1989 | int lxc_assign_network(struct lxc_list *network, pid_t pid) |
0ad19a3f | 1990 | { |
82d5ae15 | 1991 | struct lxc_list *iterator; |
82d5ae15 | 1992 | struct lxc_netdev *netdev; |
3cfc0f3a | 1993 | int err; |
0ad19a3f | 1994 | |
5f4535a3 | 1995 | lxc_list_for_each(iterator, network) { |
82d5ae15 | 1996 | |
5f4535a3 | 1997 | netdev = iterator->elem; |
82d5ae15 | 1998 | |
236087a6 DL |
1999 | /* empty network namespace, nothing to move */ |
2000 | if (!netdev->ifindex) | |
2001 | continue; | |
2002 | ||
d472214b | 2003 | err = lxc_netdev_move_by_index(netdev->ifindex, pid); |
3cfc0f3a MN |
2004 | if (err) { |
2005 | ERROR("failed to move '%s' to the container : %s", | |
2006 | netdev->link, strerror(-err)); | |
82d5ae15 DL |
2007 | return -1; |
2008 | } | |
2009 | ||
c1c75c04 | 2010 | DEBUG("move '%s' to '%d'", netdev->name, pid); |
0ad19a3f | 2011 | } |
2012 | ||
2013 | return 0; | |
2014 | } | |
2015 | ||
19a26f82 MK |
2016 | int lxc_find_gateway_addresses(struct lxc_handler *handler) |
2017 | { | |
2018 | struct lxc_list *network = &handler->conf->network; | |
2019 | struct lxc_list *iterator; | |
2020 | struct lxc_netdev *netdev; | |
2021 | int link_index; | |
2022 | ||
2023 | lxc_list_for_each(iterator, network) { | |
2024 | netdev = iterator->elem; | |
2025 | ||
2026 | if (!netdev->ipv4_gateway_auto && !netdev->ipv6_gateway_auto) | |
2027 | continue; | |
2028 | ||
2029 | if (netdev->type != LXC_NET_VETH && netdev->type != LXC_NET_MACVLAN) { | |
2030 | ERROR("gateway = auto only supported for " | |
2031 | "veth and macvlan"); | |
2032 | return -1; | |
2033 | } | |
2034 | ||
2035 | if (!netdev->link) { | |
2036 | ERROR("gateway = auto needs a link interface"); | |
2037 | return -1; | |
2038 | } | |
2039 | ||
2040 | link_index = if_nametoindex(netdev->link); | |
2041 | if (!link_index) | |
2042 | return -EINVAL; | |
2043 | ||
2044 | if (netdev->ipv4_gateway_auto) { | |
2045 | if (lxc_ipv4_addr_get(link_index, &netdev->ipv4_gateway)) { | |
2046 | ERROR("failed to automatically find ipv4 gateway " | |
2047 | "address from link interface '%s'", netdev->link); | |
2048 | return -1; | |
2049 | } | |
2050 | } | |
2051 | ||
2052 | if (netdev->ipv6_gateway_auto) { | |
2053 | if (lxc_ipv6_addr_get(link_index, &netdev->ipv6_gateway)) { | |
2054 | ERROR("failed to automatically find ipv6 gateway " | |
2055 | "address from link interface '%s'", netdev->link); | |
2056 | return -1; | |
2057 | } | |
2058 | } | |
2059 | } | |
2060 | ||
2061 | return 0; | |
2062 | } | |
2063 | ||
5e4a62bf | 2064 | int lxc_create_tty(const char *name, struct lxc_conf *conf) |
b0a33c1e | 2065 | { |
5e4a62bf | 2066 | struct lxc_tty_info *tty_info = &conf->tty_info; |
985d15b1 | 2067 | int i; |
b0a33c1e | 2068 | |
5e4a62bf DL |
2069 | /* no tty in the configuration */ |
2070 | if (!conf->tty) | |
b0a33c1e | 2071 | return 0; |
2072 | ||
13954cce | 2073 | tty_info->pty_info = |
e4e7d59d | 2074 | malloc(sizeof(*tty_info->pty_info)*conf->tty); |
b0a33c1e | 2075 | if (!tty_info->pty_info) { |
36eb9bde | 2076 | SYSERROR("failed to allocate pty_info"); |
985d15b1 | 2077 | return -1; |
b0a33c1e | 2078 | } |
2079 | ||
985d15b1 | 2080 | for (i = 0; i < conf->tty; i++) { |
13954cce | 2081 | |
b0a33c1e | 2082 | struct lxc_pty_info *pty_info = &tty_info->pty_info[i]; |
2083 | ||
13954cce | 2084 | if (openpty(&pty_info->master, &pty_info->slave, |
b0a33c1e | 2085 | pty_info->name, NULL, NULL)) { |
36eb9bde | 2086 | SYSERROR("failed to create pty #%d", i); |
985d15b1 MT |
2087 | tty_info->nbtty = i; |
2088 | lxc_delete_tty(tty_info); | |
2089 | return -1; | |
b0a33c1e | 2090 | } |
2091 | ||
5332bb84 DL |
2092 | DEBUG("allocated pty '%s' (%d/%d)", |
2093 | pty_info->name, pty_info->master, pty_info->slave); | |
2094 | ||
b035ad62 MS |
2095 | /* Prevent leaking the file descriptors to the container */ |
2096 | fcntl(pty_info->master, F_SETFD, FD_CLOEXEC); | |
2097 | fcntl(pty_info->slave, F_SETFD, FD_CLOEXEC); | |
2098 | ||
b0a33c1e | 2099 | pty_info->busy = 0; |
2100 | } | |
2101 | ||
985d15b1 | 2102 | tty_info->nbtty = conf->tty; |
1ac470c0 DL |
2103 | |
2104 | INFO("tty's configured"); | |
2105 | ||
985d15b1 | 2106 | return 0; |
b0a33c1e | 2107 | } |
2108 | ||
2109 | void lxc_delete_tty(struct lxc_tty_info *tty_info) | |
2110 | { | |
2111 | int i; | |
2112 | ||
2113 | for (i = 0; i < tty_info->nbtty; i++) { | |
2114 | struct lxc_pty_info *pty_info = &tty_info->pty_info[i]; | |
2115 | ||
2116 | close(pty_info->master); | |
2117 | close(pty_info->slave); | |
2118 | } | |
2119 | ||
2120 | free(tty_info->pty_info); | |
2121 | tty_info->nbtty = 0; | |
2122 | } | |
2123 | ||
571e6ec8 | 2124 | int lxc_setup(const char *name, struct lxc_conf *lxc_conf) |
0ad19a3f | 2125 | { |
e075f5d9 SH |
2126 | #if HAVE_APPARMOR /* || HAVE_SMACK || HAVE_SELINUX */ |
2127 | int mounted; | |
2128 | #endif | |
2129 | ||
571e6ec8 | 2130 | if (setup_utsname(lxc_conf->utsname)) { |
36eb9bde | 2131 | ERROR("failed to setup the utsname for '%s'", name); |
95b5ffaf | 2132 | return -1; |
0ad19a3f | 2133 | } |
2134 | ||
5f4535a3 | 2135 | if (setup_network(&lxc_conf->network)) { |
36eb9bde | 2136 | ERROR("failed to setup the network for '%s'", name); |
95b5ffaf | 2137 | return -1; |
0ad19a3f | 2138 | } |
2139 | ||
ac778708 DL |
2140 | if (setup_rootfs(&lxc_conf->rootfs)) { |
2141 | ERROR("failed to setup rootfs for '%s'", name); | |
95b5ffaf | 2142 | return -1; |
0ad19a3f | 2143 | } |
2144 | ||
80a881b2 | 2145 | if (setup_mount(&lxc_conf->rootfs, lxc_conf->fstab, name)) { |
36eb9bde | 2146 | ERROR("failed to setup the mounts for '%s'", name); |
95b5ffaf | 2147 | return -1; |
576f946d | 2148 | } |
2149 | ||
80a881b2 | 2150 | if (setup_mount_entries(&lxc_conf->rootfs, &lxc_conf->mount_list, name)) { |
e7938e9e MN |
2151 | ERROR("failed to setup the mount entries for '%s'", name); |
2152 | return -1; | |
2153 | } | |
2154 | ||
26ddeedd | 2155 | HOOK(name, "mount", lxc_conf); |
ac778708 DL |
2156 | if (setup_cgroup(name, &lxc_conf->cgroup)) { |
2157 | ERROR("failed to setup the cgroups for '%s'", name); | |
2158 | return -1; | |
2159 | } | |
2160 | ||
7c6ef2a2 | 2161 | if (setup_console(&lxc_conf->rootfs, &lxc_conf->console, lxc_conf->ttydir)) { |
36eb9bde | 2162 | ERROR("failed to setup the console for '%s'", name); |
95b5ffaf | 2163 | return -1; |
6e590161 | 2164 | } |
2165 | ||
7c6ef2a2 | 2166 | if (setup_tty(&lxc_conf->rootfs, &lxc_conf->tty_info, lxc_conf->ttydir)) { |
36eb9bde | 2167 | ERROR("failed to setup the ttys for '%s'", name); |
95b5ffaf | 2168 | return -1; |
b0a33c1e | 2169 | } |
2170 | ||
e075f5d9 SH |
2171 | #if HAVE_APPARMOR /* || HAVE_SMACK || HAVE_SELINUX */ |
2172 | mounted = lsm_mount_proc_if_needed(lxc_conf->rootfs.path, lxc_conf->rootfs.mount); | |
2173 | if (mounted == -1) { | |
2174 | SYSERROR("failed to mount /proc in the container."); | |
2175 | return -1; | |
2176 | } else if (mounted == 1) { | |
2177 | lxc_conf->lsm_umount_proc = 1; | |
2178 | } | |
2179 | #endif | |
2180 | ||
ac778708 | 2181 | if (setup_pivot_root(&lxc_conf->rootfs)) { |
36eb9bde | 2182 | ERROR("failed to set rootfs for '%s'", name); |
95b5ffaf | 2183 | return -1; |
ed502555 | 2184 | } |
2185 | ||
571e6ec8 | 2186 | if (setup_pts(lxc_conf->pts)) { |
36eb9bde | 2187 | ERROR("failed to setup the new pts instance"); |
95b5ffaf | 2188 | return -1; |
3c26f34e | 2189 | } |
2190 | ||
cccc74b5 DL |
2191 | if (setup_personality(lxc_conf->personality)) { |
2192 | ERROR("failed to setup personality"); | |
2193 | return -1; | |
2194 | } | |
2195 | ||
81810dd1 DL |
2196 | if (setup_caps(&lxc_conf->caps)) { |
2197 | ERROR("failed to drop capabilities"); | |
2198 | return -1; | |
2199 | } | |
2200 | ||
cd54d859 DL |
2201 | NOTICE("'%s' is setup.", name); |
2202 | ||
0ad19a3f | 2203 | return 0; |
2204 | } | |
26ddeedd SH |
2205 | |
2206 | int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf) | |
2207 | { | |
2208 | int which = -1; | |
2209 | struct lxc_list *it; | |
2210 | ||
2211 | if (strcmp(hook, "pre-start") == 0) | |
2212 | which = LXCHOOK_PRESTART; | |
2213 | else if (strcmp(hook, "mount") == 0) | |
2214 | which = LXCHOOK_MOUNT; | |
2215 | else if (strcmp(hook, "start") == 0) | |
2216 | which = LXCHOOK_START; | |
2217 | else if (strcmp(hook, "post-stop") == 0) | |
2218 | which = LXCHOOK_POSTSTOP; | |
2219 | else | |
2220 | return -1; | |
2221 | lxc_list_for_each(it, &conf->hooks[which]) { | |
2222 | int ret; | |
2223 | char *hookname = it->elem; | |
2224 | ret = run_script(name, "lxc", hookname, hook, NULL); | |
2225 | if (ret) | |
2226 | return ret; | |
2227 | } | |
2228 | return 0; | |
2229 | } |